mmc-utils: upgrade to latest revision

(From OE-Core rev: 3aeaf134f9181fa8be517f9190f56451a38d1ce5)

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/mmc/mmc-utils_git.bb

@@ -5,7 +5,7 @@ LICENSE = "GPL-2.0-only"
 LIC_FILES_CHKSUM = "file://mmc.c;beginline=1;endline=20;md5=fae32792e20f4d27ade1c5a762d16b7d"
 
 SRCBRANCH ?= "master"
-SRCREV = "123fd8b2ac3933be1319486fb1f32236a4a86a7c"
+SRCREV = "523d8f3cfb219d800f45860892e742e3a355f1bb"
 
 PV = "0.1+git"