[MIPS] Avoid using odd numbered fp registers

Don't use odd numbered fp registers for single precision data on
MIPS32r6 (64-bit FPU).

Bug: 23050326
Change-Id: I35cc19df091149773411e2336b01c170929376bc
(cherry picked from commit fc8156a3df88e259c892d50bf23f7c4f11531844)
1 file changed