MIPS: Set S-cache linesize to 64-bytes for MTI's S-cache

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/Kconfig

@@ -1013,6 +1013,7 @@ config BOOT_ELF32
 config MIPS_L1_CACHE_SHIFT
 	int
 	default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
+	default "6" if MIPS_CPU_SCACHE
 	default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
 	default "5"