sh: Fix up the SH-3 build.

SH-3 lacks an MMUCR_TI definition for global TLB flushes. As SH-3 parts
lack a split TLB, the same global flush behaviour is accomplished
through the flush bit, which just happens to be the same as on SH-4.

This fixes up the build for all SH-3 MMU parts.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/sh/include/cpu-sh3/cpu/mmu_context.h

@@ -16,6 +16,7 @@
 #define MMU_TEA		0xFFFFFFFC	/* TLB Exception Address */
 
 #define MMUCR		0xFFFFFFE0	/* MMU Control Register */
+#define MMUCR_TI	(1 << 2)	/* TLB flush bit */
 
 #define MMU_TLB_ADDRESS_ARRAY	0xF2000000
 #define MMU_PAGE_ASSOC_BIT	0x80