target/cortex_m: support Infineon Cortex-M33 from SLx2 MCU

The secure microcontroller Infineon SLx2 uses a custom Cortex-M33.
The register CPUID reports value 0x490FDB00.

Reference link to the product:
Link: https://www.infineon.com/cms/en/about-infineon/press/market-news/2022/INFCSS202211-034.html

Change-Id: I8911712c55bd50e24ed53cf49958352f470027a5
Signed-off-by: Ahmed Boughanmi <boughanmi.external@infineon.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/7879
Reviewed-by: Karl Palsson <karlp@tweak.au>
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>

src/target/cortex_m.c

@@ -111,6 +111,11 @@ static const struct cortex_m_part_info cortex_m_parts[] = {
 		.arch = ARM_ARCH_V8M,
 		.flags = CORTEX_M_F_HAS_FPV5,
 	},
+	{
+		.impl_part = INFINEON_SLX2_PARTNO,
+		.name = "Infineon-SLx2",
+		.arch = ARM_ARCH_V8M,
+	},
 	{
 		.impl_part = REALTEK_M200_PARTNO,
 		.name = "Real-M200 (KM0)",