uboot: bump to version 2018.05

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

boot/uboot/Config.in

@@ -39,7 +39,7 @@ choice
 	  Select the specific U-Boot version you want to use
 
 config BR2_TARGET_UBOOT_LATEST_VERSION
-	bool "2018.03"
+	bool "2018.05"
 
 config BR2_TARGET_UBOOT_CUSTOM_VERSION
 	bool "Custom version"
@@ -87,7 +87,7 @@ endif
 
 config BR2_TARGET_UBOOT_VERSION
 	string
-	default "2018.03"	if BR2_TARGET_UBOOT_LATEST_VERSION
+	default "2018.05"	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

@@ -1,2 +1,2 @@
 # Locally computed:
-sha256  7e7477534409d5368eb1371ffde6820f0f79780a1a1f676161c48442cb303dfd  u-boot-2018.03.tar.bz2
+sha256  4da13c2a6139a78cc08608f21fd4741db27eda336cfad7ab8264fda923b9c048  u-boot-2018.05.tar.bz2