u-boot: update default helper tools to 2010.12

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

boot/u-boot/u-boot.mk

@@ -11,7 +11,7 @@ U_BOOT_BOARD_NAME:=$(call qstrip,$(BR2_TARGET_UBOOT_BOARDNAME))
 # pick some random stable U-Boot version that will be used just to
 # build mkimage.
 ifeq ($(U_BOOT_VERSION),)
-U_BOOT_VERSION=2010.03
+U_BOOT_VERSION=2010.12
 endif
 
 ifeq ($(U_BOOT_VERSION),custom)