[PATCH][GAS] aarch64: Enable Cortex-A520 CPU

[Richard Ball]

This patch adds support for the Cortex-A520 CPU to gas.

No regressions on aarch64-none-elf.

Ok for binutils-master?

Could this patch please be committed on my behalf,
as I do not have write access yet?

gas/ChangeLog:

         * NEWS: Update docs.
         * config/tc-aarch64.c: Add Cortex-A520.
         * doc/c-aarch64.texi: Update docs.


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diff --git a/gas/NEWS b/gas/NEWS
index 
1ed043511eb67aadc96549a775a87bc50c2b5ab8..07ba75661052842554a478ee612b9c7a087cec1b 
100644
--- a/gas/NEWS
+++ b/gas/NEWS
@@ -10,6 +10,8 @@

  * Add support for Intel AVX-VNNI-INT16 instructions.

+* Add support for Cortex-A520 for AArch64.
+
  Changes in 2.41:

  * Add support for Intel FRED instructions.
diff --git a/gas/config/tc-aarch64.c b/gas/config/tc-aarch64.c
index 
99fb5de267960cac694128357bf7f6cf3576b96c..e692161105a5c75fab92f707a114c20c9531f18f 
100644
--- a/gas/config/tc-aarch64.c
+++ b/gas/config/tc-aarch64.c
@@ -10227,6 +10227,10 @@ static const struct aarch64_cpu_option_table 
aarch64_cpus[] = {
                    | AARCH64_FEATURE_MEMTAG
                    | AARCH64_FEATURE_SVE2_BITPERM),
     "Cortex-A510"},
+  {"cortex-a520", AARCH64_FEATURE (AARCH64_ARCH_V9_2,
+                  AARCH64_FEATURE_MEMTAG
+                  | AARCH64_FEATURE_SVE2_BITPERM),
+   "Cortex-A520"},
    {"cortex-a710", AARCH64_FEATURE (AARCH64_ARCH_V9,
                    AARCH64_FEATURE_BFLOAT16
                    | AARCH64_FEATURE_I8MM
diff --git a/gas/doc/c-aarch64.texi b/gas/doc/c-aarch64.texi
index 
acde4a77dd25f20398c41222ce66bbc64cc99bbd..ed6b46e042290d806d98728d725b62520644e246 
100644
--- a/gas/doc/c-aarch64.texi
+++ b/gas/doc/c-aarch64.texi
@@ -72,6 +72,7 @@ on the target processor.  The following processor 
names are recognized:
  @code{cortex-a78ae},
  @code{cortex-a78c},
  @code{cortex-a510},
+@code{cortex-a520},
  @code{cortex-a710},
  @code{ares},
  @code{exynos-m1},