uboot-mediatek: remove swig requirement

Ever since this package was introduced, the SDK for mt7629 failed to
build as it started failing on this package.

Fixed by porting Hauke's similar patch for uboot-sunxi to uboot-mediatek.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

package/boot/uboot-mediatek/Makefile

@@ -2,7 +2,7 @@ include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/kernel.mk
 
 PKG_VERSION:=2020.04
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 PKG_HASH:=fe732aaf037d9cc3c0909bad8362af366ae964bbdac6913a34081ff4ad565372
 
 include $(INCLUDE_DIR)/u-boot.mk

package/boot/uboot-mediatek/patches/010-no-binman.patch

@@ -0,0 +1,25 @@
+--- a/Makefile
++++ b/Makefile
+@@ -1667,8 +1667,10 @@ u-boot-elf.lds: arch/u-boot-elf.lds prepare FORCE
+ ifeq ($(CONFIG_SPL),y)
+ spl/u-boot-spl-mtk.bin: spl/u-boot-spl
+ 
+-u-boot-mtk.bin: u-boot.dtb u-boot.img spl/u-boot-spl-mtk.bin FORCE
+-	$(call if_changed,binman)
++OBJCOPYFLAGS_u-boot-mtk.bin = -I binary -O binary \
++			--pad-to=$(CONFIG_SPL_PAD_TO) --gap-fill=0xff
++u-boot-mtk.bin: u-boot.img spl/u-boot-spl-mtk.bin FORCE
++	$(call if_changed,pad_cat)
+ else
+ MKIMAGEFLAGS_u-boot-mtk.bin = -T mtk_image \
+ 	-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \
+--- a/arch/arm/mach-mediatek/Kconfig
++++ b/arch/arm/mach-mediatek/Kconfig
+@@ -36,7 +36,6 @@ config TARGET_MT7629
+ 	bool "MediaTek MT7629 SoC"
+ 	select CPU_V7A
+ 	select SPL
+-	select BINMAN
+ 	help
+ 	  The MediaTek MT7629 is a ARM-based SoC with a dual-core Cortex-A7
+ 	  including DDR3, crypto engine, 3x3 11n/ac Wi-Fi, Gigabit Ethernet,