MIPS: Fix invalidate_dcache_range to operate on L1 Dcache

Commit fb64cda57998 ("MIPS: Abstract cache op loops with a macro")
accidentally modified invalidate_dcache_range to operate on the L1
Icache instead of the Dcache. Fix the cache op used to operate on the
Dcache.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Fixes: fb64cda57998 ("MIPS: Abstract cache op loops with a macro")
1 file changed