Commit c6e1cdd64357 ("MIPS: introduce MIPS_L1_CACHE_SHIFT_<N>") forgot
to select the correct MIPS_L1_CACHE_SHIFT for SNI RM. This breaks non
coherent DMA because of a wrong allocation alignment.
Fixes: c6e1cdd64357 ("MIPS: introduce MIPS_L1_CACHE_SHIFT_<N>") Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>