PR92090: Fix part of testcase failures by r276469

PR92090: Fix part of testcase failures by r276469

-finline-functions is enabled by default for O2 since r276469, update the
test cases with -fno-inline-functions.
c11-atomic-exec-5.c stills hit ICE of LRA on BE systems in PR92090.
This commit is NOT a fix for the bug and so it must NOT be closed.

gcc/testsuite/ChangeLog:

	2019-11-06  Xiong Hu Luo  <luoxhu@linux.ibm.com>

	PR92090
	* gcc.target/powerpc/pr72804.c: Add -fno-inline-functions --param
	max-inline-insns-single-O2=200.
	* gcc.target/powerpc/pr79439-1.c: Add -fno-inline-functions.
	* gcc.target/powerpc/vsx-builtin-7.c: Likewise.

From-SVN: r277872