tcl: add Espressif RISC-V config files

Add configuration files for Espressif RISC-V based chips:
- ESP32-C2, ESP32-C3, ESP32-C6, ESP32-H2 target configs
- Board configs for builtin USB-JTAG and FTDI interfaces

while adding the new config files:
- Fix indentation in existing Espressif config files
- Adapt esp_common.cfg with RISC-V support
- Add explicit 'transport select jtag' to interface configs to avoid
  'DEPRECATED: auto-selecting transport' warning

Change-Id: I45fcbca2fe50888750e2e98a0a6773de86aad6d0
Signed-off-by: Erhan Kurubas <erhan.kurubas@espressif.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/9195
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>

tcl/board/esp32c2-ftdi.cfg

@@ -0,0 +1,21 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Example OpenOCD configuration file for ESP32-C2 connected via ESP-Prog.
+#
+# For example, OpenOCD can be started for ESP32-C2 debugging on
+#
+#   openocd -f board/esp32c2-ftdi.cfg
+#
+
+# Source the JTAG interface configuration file
+source [find interface/ftdi/esp32_devkitj_v1.cfg]
+# Source the ESP32-C2 configuration file
+source [find target/esp32c2.cfg]
+
+# The speed of the JTAG interface, in kHz. If you get DSR/DIR errors (and they
+# do not relate to OpenOCD trying to read from a memory range without physical
+# memory being present there), you can try lowering this.
+#
+# On DevKit-J, this can go as high as 20MHz if CPU frequency is 80MHz, or 26MHz
+# if CPU frequency is 160MHz or 240MHz.
+adapter speed 20000

tcl/board/esp32c3-builtin.cfg

@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Example OpenOCD configuration file for ESP32-C3 connected via builtin USB-JTAG adapter.
+#
+# For example, OpenOCD can be started for ESP32-C3 debugging on
+#
+#   openocd -f board/esp32c3-builtin.cfg
+#
+
+# Source the JTAG interface configuration file
+source [find interface/esp_usb_jtag.cfg]
+# Source the ESP32-C3 configuration file
+source [find target/esp32c3.cfg]
+
+adapter speed 40000

tcl/board/esp32c3-ftdi.cfg

@@ -0,0 +1,21 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Example OpenOCD configuration file for ESP32-C3 connected via ESP-Prog.
+#
+# For example, OpenOCD can be started for ESP32-C3 debugging on
+#
+#   openocd -f board/esp32c3-ftdi.cfg
+#
+
+# Source the JTAG interface configuration file
+source [find interface/ftdi/esp32_devkitj_v1.cfg]
+# Source the ESP32-C3 configuration file
+source [find target/esp32c3.cfg]
+
+# The speed of the JTAG interface, in kHz. If you get DSR/DIR errors (and they
+# do not relate to OpenOCD trying to read from a memory range without physical
+# memory being present there), you can try lowering this.
+#
+# On DevKit-J, this can go as high as 20MHz if CPU frequency is 80MHz, or 26MHz
+# if CPU frequency is 160MHz or 240MHz.
+adapter speed 20000

tcl/board/esp32c6-builtin.cfg

@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Example OpenOCD configuration file for ESP32-C6 connected via builtin USB-JTAG adapter.
+#
+# For example, OpenOCD can be started for ESP32-C6 debugging on
+#
+#   openocd -f board/esp32c6-builtin.cfg
+#
+
+# Source the JTAG interface configuration file
+source [find interface/esp_usb_jtag.cfg]
+# Source the ESP32-C6 configuration file
+source [find target/esp32c6.cfg]
+
+adapter speed 40000

tcl/board/esp32h2-builtin.cfg

@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Example OpenOCD configuration file for ESP32-H2 connected via builtin USB-JTAG adapter.
+#
+# For example, OpenOCD can be started for ESP32-H2 debugging on
+#
+#   openocd -f board/esp32h2-builtin.cfg
+#
+
+# Source the JTAG interface configuration file
+source [find interface/esp_usb_jtag.cfg]
+# Source the ESP32-H2 configuration file
+source [find target/esp32h2.cfg]
+
+adapter speed 40000