boot/uboot: bump to version 2021.07

See: https://lists.denx.de/pipermail/u-boot/2021-July/453729.html

Signed-off-by: Pierre-Jean Texier <texier.pj2@gmail.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

boot/uboot/Config.in

@@ -41,7 +41,7 @@ choice
 	  Select the specific U-Boot version you want to use
 
 config BR2_TARGET_UBOOT_LATEST_VERSION
-	bool "2021.04"
+	bool "2021.07"
 
 config BR2_TARGET_UBOOT_CUSTOM_VERSION
 	bool "Custom version"
@@ -85,7 +85,7 @@ endif
 
 config BR2_TARGET_UBOOT_VERSION
 	string
-	default "2021.04"	if BR2_TARGET_UBOOT_LATEST_VERSION
+	default "2021.07"	if BR2_TARGET_UBOOT_LATEST_VERSION
 	default BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE \
 		if BR2_TARGET_UBOOT_CUSTOM_VERSION
 	default "custom"	if BR2_TARGET_UBOOT_CUSTOM_TARBALL

boot/uboot/uboot.hash

@@ -1,3 +1,3 @@
 # Locally computed:
-sha256  0d438b1bb5cceb57a18ea2de4a0d51f7be5b05b98717df05938636e0aadfe11a  u-boot-2021.04.tar.bz2
+sha256  312b7eeae44581d1362c3a3f02c28d806647756c82ba8c72241c7cdbe68ba77e  u-boot-2021.07.tar.bz2
 sha256  8177f97513213526df2cf6184d8ff986c675afb514d4e68a404010521b880643  Licenses/gpl-2.0.txt