linux-imx

MIPS: Handle MIPS IV, V and R2 FPU instructions on MIPS R6 as well

MIPS R2 FPU instructions are also present in MIPS R6 so amend the
preprocessor definitions to take MIPS R6 into consideration.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>