uboot-mediatek: update to latest version

Signed-off-by: John Crispin <john@phrozen.org>

package/boot/uboot-mediatek/Makefile

@@ -1,9 +1,8 @@
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/kernel.mk
 
-PKG_VERSION:=2020.04
-PKG_RELEASE:=2
-PKG_HASH:=fe732aaf037d9cc3c0909bad8362af366ae964bbdac6913a34081ff4ad565372
+PKG_VERSION:=2020.07
+PKG_HASH:=c1f5bf9ee6bb6e648edbf19ce2ca9452f614b08a9f886f1a566aa42e8cf05f6a
 
 include $(INCLUDE_DIR)/u-boot.mk
 include $(INCLUDE_DIR)/package.mk

package/boot/uboot-mediatek/patches/005-update-bpir2-defconfig.patch

@@ -5,7 +5,6 @@ index 6b9fbd7e22..fb2a004803 100644
 @@ -52,3 +52,13 @@ CONFIG_TIMER=y
  CONFIG_WDT_MTK=y
  CONFIG_LZMA=y
- # CONFIG_EFI_LOADER is not set
 +CONFIG_CMD_BOOTZ=y
 +CONFIG_OF_LIBFDT_OVERLAY=y
 +#enables savenenv-command

package/boot/uboot-mediatek/patches/007-env-fat-use-bootdevice.patch

@@ -37,11 +37,10 @@ diff --git a/env/fat.c b/env/fat.c
 index 35a1955e63..63aced9317 100644
 --- a/env/fat.c
 +++ b/env/fat.c
-@@ -29,6 +29,36 @@
- # endif
+@@ -29,6 +29,34 @@
+ # define LOADENV
  #endif
  
-+#if defined(CMD_SAVEENV) || defined(CMD_LOADENV)
 +__weak int mmc_get_env_dev(void)
 +{
 +#ifdef CONFIG_SYS_MMC_ENV_DEV
@@ -69,11 +68,10 @@ index 35a1955e63..63aced9317 100644
 +	return CONFIG_ENV_FAT_DEVICE_AND_PART;
 +#endif
 +}
-+#endif
 +
- #ifdef CMD_SAVEENV
  static int env_fat_save(void)
  {
+ 	env_t __aligned(ARCH_DMA_MINALIGN) env_new;
 @@ -43,7 +71,7 @@ static int env_fat_save(void)
  		return err;