uboot-omap: update to 2015.10

- tested on Beagleboard C4

- remove upstream patches

- disable THUMB mode on OMAP3 this increases binary size
  (remove CONFIG_SYS_THUMB_BUILD)
- reduce SPL size by disabling EXT feature
  (remove CONFIG_SPL_EXT_SUPPORT)

this fixes 2015.07 and 2015.10-rc3
Beagleboard C4 booting
which were broken by upstream commit
with id: bd2c4522c26d535515aebca52d27c004a7e0c05c

Arm THUMB mode is broken because of an yet unknown errata
see: http://lists.denx.de/pipermail/u-boot/2015-August/225793.html

- backport upstream fix that was introduced in 2015.10-rc5
  and was not fixed in 2015.10 final

Signed-off-by: Dirk Neukirchen <dirkneukirchen@web.de>

SVN-Revision: 47924

package/boot/uboot-omap/Makefile

@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=u-boot
-PKG_VERSION:=2013.10
+PKG_VERSION:=2015.10
 PKG_RELEASE:=1
 
 PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(BUILD_VARIANT)/$(PKG_NAME)-$(PKG_VERSION)
@@ -16,7 +16,7 @@ PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_URL:= \
 	http://mirror2.openwrt.org/sources \
 	ftp://ftp.denx.de/pub/u-boot
-PKG_MD5SUM:=a076a044b64371edc52f7e562b13f6b2
+PKG_MD5SUM:=7c203b0fc3390a122d8e8b75f147eac5
 
 PKG_LICENSE:=GPL-2.0 GPL-2.0+
 PKG_LICENSE_FILES:=Licenses/README