Add support for HiFive1 RevB board (#456)

Adds new PID (0x1051) used on board to libjaylink, and add config
and flash entry for RevB board and FE310-G002 respectively.

src/flash/nor/fespi.c

@@ -136,7 +136,8 @@ struct fespi_target {
 /* TODO !!! What is the right naming convention here? */
 static const struct fespi_target target_devices[] = {
 	/* name,   tap_idcode, ctrl_base */
-	{ "Freedom E300 SPI Flash",  0x10e31913 , 0x10014000 },
+	{ "Freedom E310-G000 SPI Flash",  0x10e31913 , 0x10014000 },
+	{ "Freedom E310-G002 SPI Flash",  0x20000913 , 0x10014000 },
 	{ NULL,    0,           0          }
 };
 

src/jtag/drivers/libjaylink/contrib/99-libjaylink.rules

@@ -37,5 +37,6 @@ ATTRS{idVendor}=="1366", ATTRS{idProduct}=="1015", MODE="664", GROUP="plugdev"
 ATTRS{idVendor}=="1366", ATTRS{idProduct}=="1016", MODE="664", GROUP="plugdev"
 ATTRS{idVendor}=="1366", ATTRS{idProduct}=="1017", MODE="664", GROUP="plugdev"
 ATTRS{idVendor}=="1366", ATTRS{idProduct}=="1018", MODE="664", GROUP="plugdev"
+ATTRS{idVendor}=="1366", ATTRS{idProduct}=="1051", MODE="664", GROUP="plugdev"
 
 LABEL="libjaylink_end_rules"

src/jtag/drivers/libjaylink/libjaylink/discovery_usb.c

@@ -59,7 +59,8 @@ static const uint16_t pids[][2] = {
 	{0x1015, 0},
 	{0x1016, 0},
 	{0x1017, 0},
-	{0x1018, 0}
+	{0x1018, 0},
+	{0x1051, 0},
 };
 
 /** Maximum length of the USB string descriptor for the serial number. */