u-boot-aspeed: Fix build warnings

Backport some fixes to ensure the build completes without warnings. It
now also does not rebuild if all objects are up to date.

Joel Stanley (1):
      configs: ast2600: Use stringify

Pali Rohár (2):
      version: Move version_string[] from version.h to version_string.h
      Remove including timestamp.h in version.h

Simon Glass (1):
      image: Correct strncpy() warning with image_set_name()

Tom Rini (1):
      Makefile: Silence binutils 2.39 linker warnings

Change-Id: I0c5d06d011117c9857cfb30a2a5fd06109bd35de
Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/meta-aspeed/recipes-bsp/u-boot/u-boot-common-aspeed-sdk_2019.04.inc b/meta-aspeed/recipes-bsp/u-boot/u-boot-common-aspeed-sdk_2019.04.inc
index 795dd30..5f7d514 100644
--- a/meta-aspeed/recipes-bsp/u-boot/u-boot-common-aspeed-sdk_2019.04.inc
+++ b/meta-aspeed/recipes-bsp/u-boot/u-boot-common-aspeed-sdk_2019.04.inc
@@ -10,7 +10,7 @@
 
 # We use the revision in order to avoid having to fetch it from the
 # repo during parse
-SRCREV = "f75ff7f31d294a7a1015fb648d3112448c68ef5c"
+SRCREV = "5751ee2f903d30a85dc2f347b604cb8e33fba28c"
 SRC_URI = "git://git@github.com/openbmc/u-boot.git;nobranch=1;protocol=https"
 
 SRC_URI:append:uboot-flash-32768 = " file://u-boot_flash_32M.cfg"