MIPS/GAS/testsuite: Run the mul macro test across architectures
The multiplication macros expand differently based on the ISA chosen, so
run the 'mul' macro test across compatible architectures, adopting the
'mul-ilocks' test orphaned by commit 23fce1e31156 ("MIPS16 intermix test
failure"), <https://sourceware.org/ml/binutils/2009-01/msg00335.html>,
and providing coverage for the expansion variants.
Only run from MIPS III up for now and remove the ISA override from the
source, so that the 64-bit instructions are covered for individual
64-bit architectures.
11 files changed
