common/board_f: enable initr_trap for MIPS

Enable initr_trap hook also for MIPS to install and enable
U-Boot's specific MIPS exception handlers.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/common/board_r.c b/common/board_r.c
index d959ad3..5496f45 100644
--- a/common/board_r.c
+++ b/common/board_r.c
@@ -191,7 +191,7 @@
 	return 0;
 }
 
-#if defined(CONFIG_PPC) || defined(CONFIG_M68K)
+#if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
 static int initr_trap(void)
 {
 	/*
@@ -807,7 +807,7 @@
 #ifdef CONFIG_NEEDS_MANUAL_RELOC
 	initr_manual_reloc_cmdtable,
 #endif
-#if defined(CONFIG_PPC) || defined(CONFIG_M68K)
+#if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
 	initr_trap,
 #endif
 #ifdef CONFIG_ADDR_MAP