x86/kconfig: Remove CONFIG_AS_AVX512

Commit

  5f5305d ("raid6: skip avx512 checks")

and commit

  bc23fe6 ("crypto: x86 - Remove CONFIG_AS_AVX512 handling")

removed all uses of CONFIG_AS_AVX512.

Remove check for assembler support of AVX-512 instructions.

Signed-off-by: Uros Bizjak <[email protected]>
Signed-off-by: Borislav Petkov (AMD) <[email protected]>
Link: https://lore.kernel.org/[email protected]

Author: ubizjak

arch/x86/Kconfig.assembler

@@ -1,11 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 # Copyright (C) 2020 Jason A. Donenfeld <[email protected]>. All Rights Reserved.
 
-config AS_AVX512
-	def_bool $(as-instr,vpmovm2b %k1$(comma)%zmm5)
-	help
-	  Supported by binutils >= 2.25 and LLVM integrated assembler
-
 config AS_WRUSS
 	def_bool $(as-instr64,wrussq %rax$(comma)(%rbx))
 	help