Add initial autodetection support for Apple M4 as VORTEX with HAVE_SME #5117

Job	Run time
build (ubuntu-latest, gfortran, cmake)	42m 2s
build (ubuntu-latest, gfortran, make)	16m 33s
cross_build (mips64el, mips64el-linux-gnuabi64, DYNAMIC_ARCH=1 TARGET=GENERIC)	5m 36s
build (ubuntu-latest, flang, cmake)	12m 48s
cross_build (riscv64, riscv64-linux-gnu, TARGET=RISCV64_GENERIC)	9m 50s
build (ubuntu-latest, flang, make)	7m 22s
cross_build (mipsel, mipsel-linux-gnu, TARGET=MIPS1004K)	5m 33s
cross_build (alpha, alpha-linux-gnu, TARGET=EV4)	4m 47s
build (macos-latest, gfortran, cmake)	29m 49s
msys2 (UCRT64, int32, Release)	1h 49m 23s
msys2 (UCRT64, int64, Release)	1h 47m 51s
build (macos-latest, gfortran, make)	3m 24s
msys2 (MINGW32, int32, Release)	1h 13m 52s
msys2 (CLANG64, int32, Release)	59m 39s
msys2 (CLANG64, int64, Release)	1h 1m 21s
msys2 (CLANG32, int32, Release)	53m 45s
msys2 (UCRT64, int32, None, mingw-w64-ucrt-x86_64, fc)	1h 42m 54s
	11h 46m 29s

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