u-boot: Upgrade to 2018.05 release

This upgrades the U-Boot from 2018.03 to 2018.05 release.

(From OE-Core rev: 8e8cea4569ffa8ea81b7e99f98f9dab203614d22)

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Richard Purdie <richard.purdie@linuxfoundation.org>
Cc: Ross Burton <ross.burton@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-bsp/u-boot/u-boot-common_2018.05.inc

@@ -7,7 +7,7 @@ PE = "1"
 
 # We use the revision in order to avoid having to fetch it from the
 # repo during parse
-SRCREV = "f95ab1fb6e37f0601f397091bb011edf7a98b890"
+SRCREV = "890e79f2b1c26c5ba1a86d179706348aec7feef7"
 
 SRC_URI = "git://git.denx.de/u-boot.git"