testsuite: i386: Require avx512vpopcntdq in two tests

testsuite: i386: Require avx512vpopcntdq in two tests

Two recent AVX512 tests FAIL on Solaris/x86 with /bin/as:

FAIL: gcc.target/i386/avx512vpopcntdq-pr97770-2.c (test for excess errors)

Excess errors:
Assembler: avx512vpopcntdq-pr97770-2.c
        "/var/tmp//ccM4Gt1a.s", line 171 : Illegal mnemonic
        Near line: "    vpopcntd        (%eax), %zmm0"
        "/var/tmp//ccM4Gt1a.s", line 171 : Syntax error
        Near line: "    vpopcntd        (%eax), %zmm0"

FAIL: gcc.target/i386/avx512vpopcntdqvl-pr97770-1.c (test for excess errors)

similarly.

Fixed as follows.

Tested on i386-pc-solaris2.11 with as and gas and x86_64-pc-linux-gnu.

2020-12-07  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	gcc/testsuite:
	* gcc.target/i386/avx512vpopcntdq-pr97770-2.c: Require
	avx512vpopcntdq support.
	* gcc.target/i386/avx512vpopcntdqvl-pr97770-1.c: Require
	avx512vpopcntdq, avx512vl support.