MIPS: Add cases for CPU_P5600

Add a CPU_P5600 case to various switch statements, doing the same thing
as for CPU_PROAPTIV.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6408/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index d72e9a1..6c37d21 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -1115,6 +1115,7 @@
 	case CPU_1004K:
 	case CPU_1074K:
 	case CPU_INTERAPTIV:
+	case CPU_P5600:
 	case CPU_PROAPTIV:
 		if ((c->cputype == CPU_74K) || (c->cputype == CPU_1074K))
 			alias_74k_erratum(c);