Add AMD znver4 processor support

Add AMD znver4 processor support

2022-09-28  Tejas Joshi <TejasSanjay.Joshi@amd.com>

gas/

        * config/tc-i386.c (cpu_arch): Add znver4 ARCH and rmpquery SUBARCH.
        (md_assemble): Expand comment before swap_operands() with rmpquery.
        * doc/c-i386.texi: Add znver4.
        * testsuite/gas/i386/arch-14-1.d: New.
        * testsuite/gas/i386/arch-14-1.s: New.
        * testsuite/gas/i386/arch-14-znver4.d: New.
        * testsuite/gas/i386/i386.exp: Add new znver4 test cases.
        * testsuite/gas/i386/rmpquery.d: New.
        * testsuite/gas/i386/rmpquery.s: New.
        * testsuite/gas/i386/x86-64-arch-4-1.d: New.
        * testsuite/gas/i386/x86-64-arch-4-1.s: New.
        * testsuite/gas/i386/x86-64-arch-4-znver4.d: New.

opcodes/

        * i386-dis.c (x86_64_table): Add rmpquery.
        * i386-gen.c (cpu_flag_init): Add CPU_ZNVER4_FLAGS and
        CPU_RMPQUERY_FLAGS.
        (cpu_flags): Add CpuRMPQUERY.
        * i386-opc.h (enum): Add CpuRMPQUERY.
        (i386_cpu_flags): Add cpurmpquery.
        * i386-opc.tbl: Add rmpquery insn.
        * i386-init.h: Re-generated.
        * i386-tbl.h: Re-generated.