Prepare v2012.04

Also tiny style cleanup to tools/patman/README

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/Makefile b/Makefile
index 69aaf10..cdd4294 100644
--- a/Makefile
+++ b/Makefile
@@ -24,7 +24,7 @@
 VERSION = 2012
 PATCHLEVEL = 04
 SUBLEVEL =
-EXTRAVERSION = -rc3
+EXTRAVERSION =
 ifneq "$(SUBLEVEL)" ""
 U_BOOT_VERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
 else