Prepare v2013.04-rc2

Signed-off-by: Tom Rini <trini@ti.com>

Makefile

@@ -24,7 +24,7 @@
 VERSION = 2013
 PATCHLEVEL = 04
 SUBLEVEL =
-EXTRAVERSION = -rc1
+EXTRAVERSION = -rc2
 ifneq "$(SUBLEVEL)" ""
 U_BOOT_VERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
 else