Redo RM9000 workaround which along with other DSP ASE changes was

arch/mips/kernel/signal-common.h

arch/mips/kernel/signal.c

arch/mips/kernel/signal32.c

arch/mips/kernel/signal_n32.c

include/asm-mips/cpu-features.h

include/asm-mips/mach-ja/cpu-feature-overrides.h

include/asm-mips/mach-ocelot3/cpu-feature-overrides.h

include/asm-mips/mach-yosemite/cpu-feature-overrides.h

include/asm-mips/war.h