[MIPS] Fix detection and handling of the 74K processor.
    
Nothing exciting; Linux just didn't know it yet so this is most adding
a value to a case statement.
    
Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index 053dbac..4ff07e2 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -906,6 +906,7 @@
 	case CPU_4KEC:
 	case CPU_24K:
 	case CPU_34K:
+	case CPU_74K:
 		i_ehb(p);
 		tlbw(p);
 		break;