arm64: cputype: Add Cortex-A720 definitions

Add cputype definitions for Cortex-A720. These will be used for errata
detection in subsequent patches.

These values can be found in Table A-186 ("MIDR_EL1 bit descriptions")
in issue 0002-05 of the Cortex-A720 TRM, which can be found at:

  https://developer.arm.com/documentation/102530/0002/?lang=enSigned-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20240603111812.1514101-3-mark.rutland@arm.comSigned-off-by: Catalin Marinas <catalin.marinas@arm.com>

arch/arm64/include/asm/cputype.h

@@ -88,6 +88,7 @@
 #define ARM_CPU_PART_CORTEX_A78C	0xD4B
 #define ARM_CPU_PART_CORTEX_X3		0xD4E
 #define ARM_CPU_PART_NEOVERSE_V2	0xD4F
+#define ARM_CPU_PART_CORTEX_A720	0xD81
 #define ARM_CPU_PART_CORTEX_X4		0xD82
 #define ARM_CPU_PART_NEOVERSE_V3	0xD84
 
@@ -165,6 +166,7 @@
 #define MIDR_CORTEX_A78C	MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A78C)
 #define MIDR_CORTEX_X3 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_X3)
 #define MIDR_NEOVERSE_V2 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_NEOVERSE_V2)
+#define MIDR_CORTEX_A720 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A720)
 #define MIDR_CORTEX_X4 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_X4)
 #define MIDR_NEOVERSE_V3 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_NEOVERSE_V3)
 #define MIDR_THUNDERX	MIDR_CPU_MODEL(ARM_CPU_IMP_CAVIUM, CAVIUM_CPU_PART_THUNDERX)