u-boot, u-boot-fw-utils-cross, u-boot-mkimage: Upgrade to 2013.07

This upgrades the U-Boot based recipes for 2013.07 release.

This removes the 2011.03, 2011.06 and 2013.01.01 versions so we keep a
single one in core. The following recipes has been upgraded:

 - u-boot (remove old versions)
 - u-boot-mkimage (remove old versions)
 - u-boot-fw-utils -> u-boot-fw-utils-cross (renamed and reworked)

The u-boot-fw-utils-cross recipe has been reworked as it uses the
UBOOT_MACHINE to find default environment for use so it is indeed a
cross binary and not a native one.

(From OE-Core rev: c5fff5748e0aaf7e135fdd464c2104b1d3cbfd5a)

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-bsp/u-boot/files/fix-arm920t-eabi.patch

@@ -1,24 +0,0 @@
-Upstream-Status: Inappropriate [configuration]
-
----
- cpu/arm920t/config.mk |    4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
-
---- u-boot-1.3.2.orig/cpu/arm920t/config.mk
-+++ u-boot-1.3.2/cpu/arm920t/config.mk
-@@ -22,13 +22,13 @@
- #
- 
- PLATFORM_RELFLAGS += -fno-strict-aliasing  -fno-common -ffixed-r8 \
- 	-msoft-float
- 
--PLATFORM_CPPFLAGS += -march=armv4
-+#PLATFORM_CPPFLAGS += -march=armv4
- # =========================================================================
- #
- # Supply options according to compiler version
- #
- # =========================================================================
--PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu)
-+PLATFORM_CPPFLAGS +=$(call cc-option)
- PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))