MIPS: asm: Rename GCC_OFF12_ASM to GCC_OFF_SMALL_ASM

The GCC_OFF12_ASM macro is used for 12-bit immediate constrains
but we will also use it for 9-bit constrains on MIPS R6 so we
rename it to something more appropriate.

Cc: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>

diff --cc arch/mips/include/asm/atomic.h
Simple merge

diff --cc arch/mips/include/asm/bitops.h
Simple merge

diff --cc arch/mips/include/asm/cmpxchg.h
Simple merge

diff --cc arch/mips/include/asm/compiler.h
Simple merge

diff --cc arch/mips/include/asm/edac.h
Simple merge

diff --cc arch/mips/include/asm/futex.h
Simple merge

diff --cc arch/mips/include/asm/mach-pmcs-msp71xx/msp_regops.h
Simple merge

diff --cc arch/mips/include/asm/octeon/cvmx-cmd-queue.h
Simple merge

diff --cc arch/mips/include/asm/spinlock.h
Simple merge