rpi-config: Upgrade to tip of tree

Upgrade to the latest version of the repository with includes the
following improvements of the template for config.txt:

- update revision and date stamp
- additon of dtoverlay
- general updates

This work was sponsored by GOVCERT.LU.

Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>

recipes-bsp/bootfiles/rpi-config_git.bb

@@ -7,7 +7,7 @@ LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda
 
 COMPATIBLE_MACHINE = "^rpi$"
 
-SRCREV = "648ffc470824c43eb0d16c485f4c24816b32cd6f"
+SRCREV = "6ac2d832c6c3b208e2669f50ec1abf2c20cb7ff4"
 SRC_URI = "git://github.com/Evilpaul/RPi-config.git;protocol=https;branch=master \
           "