u-boot-aspeed: Enable FIT signature verification

This turns on FIT signature verification ("vboot") features in the
ast2600_openbmc_spl_emmc_defconfig.

A signed FIT will be checked by the loader (either SPl or u-boot
proper).

Heinrich Schuchardt (1):
      fit: check return value of fit_image_get_data_size()

Joel Stanley (4):
      ast2600: Allow selection of SPL boot devices
      config: ast2600: Reduce SPL image size
      ast2600: Modify SPL SRAM layout
      config: ast2600: Enable FIT signature verification

Change-Id: If0974fffc63072dc922b3bc5899a791adcdb40a3
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 9cf7ca1..a10cc19 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
@@ -8,7 +8,7 @@
 
 # We use the revision in order to avoid having to fetch it from the
 # repo during parse
-SRCREV = "90a88ec328b2a9ee6b431217c466c72a32fde47b"
+SRCREV = "76a4982c941e83364d04813fbb8015ec15aae1d3"
 
 SRC_URI = "git://git@github.com/openbmc/u-boot.git;nobranch=1;protocol=https"