arm: enable Cortex-R52+ CPU

Patch is adding Cortex-R52+ as 'cortex-r52plus' command line
flag for -mcpu option.

bfd/

	* cpu-arm.c: New Cortex-R52+ CPU.

gas/

	* NEWS: Update docs.
	* config/tc-arm.c: New Cortex-R52+ CPU.
	* doc/c-arm.texi: Update docs.
	* testsuite/gas/arm/cpu-cortex-r52plus.d: New test.

bfd/cpu-arm.c

@@ -166,6 +166,7 @@ processors[] =
   { bfd_mach_arm_7,	  "cortex-r4f"	    },
   { bfd_mach_arm_7,	  "cortex-r5"	    },
   { bfd_mach_arm_8R,	  "cortex-r52"	    },
+  { bfd_mach_arm_8R,	  "cortex-r52plus"	    },
   { bfd_mach_arm_7,	  "cortex-r7"	    },
   { bfd_mach_arm_7,	  "cortex-r8"	    },
   { bfd_mach_arm_8,	  "cortex-x1"	    },

gas/NEWS

@@ -1,5 +1,7 @@
 -*- text -*-
 
+* Add support for Cortex-R52+ for Arm.
+
 * Add support for Cortex-A510, Cortex-A710, Cortex-X2 for AArch64.
 
 * Outputs of .ds.x directive and .tfloat directive with hex input from

gas/config/tc-arm.c

@@ -31603,6 +31603,9 @@ static const struct arm_cpu_option_table arm_cpus[] =
   ARM_CPU_OPT ("cortex-r52",	  "Cortex-R52",	       ARM_ARCH_V8R,
 	       ARM_FEATURE_CORE_HIGH (ARM_EXT2_CRC),
 	      FPU_ARCH_NEON_VFP_ARMV8),
+  ARM_CPU_OPT ("cortex-r52plus",	  "Cortex-R52+",	       ARM_ARCH_V8R,
+	       ARM_FEATURE_CORE_HIGH (ARM_EXT2_CRC),
+	      FPU_ARCH_NEON_VFP_ARMV8),
   ARM_CPU_OPT ("cortex-m35p",	  "Cortex-M35P",       ARM_ARCH_V8M_MAIN,
 	       ARM_FEATURE_CORE_LOW (ARM_EXT_V5ExP | ARM_EXT_V6_DSP),
 	       FPU_NONE),

gas/doc/c-arm.texi

@@ -141,6 +141,7 @@ recognized:
 @code{cortex-r7},
 @code{cortex-r8},
 @code{cortex-r52},
+@code{cortex-r52plus},
 @code{cortex-m35p},
 @code{cortex-m33},
 @code{cortex-m23},

gas/testsuite/gas/arm/cpu-cortex-r52plus.d

@@ -0,0 +1,6 @@
+# name: Assemble and dump for cortex-r52plus CPU
+# source: nop-asm.s
+# as: -mcpu=cortex-r52plus
+# objdump: -d -mcortex-r52plus
+
+#...