linux-yocto: fix do_patch failure due to lack of git config

This issue been addressed in oecore here:
http://lists.openembedded.org/pipermail/openembedded-core/2016-October/127230.html

Till we take 25b43cb05c645e43f96bc18906441b8fdc272228 from oecore, this is a
temporary fix to whitelist and pass git committer environment to do_patch task.

Signed-off-by: Amarnath Valluri <amarnath.valluri@intel.com>

Author: avalluri

docker/build-project.sh

@@ -86,7 +86,7 @@ else
   echo "SSTATE_DIR = \"${BUILD_CACHE_DIR}/sstate\"" >> conf/auto.conf
 fi
 export BUILD_ID=${CI_BUILD_ID}
-export BB_ENV_EXTRAWHITE="$BB_ENV_EXTRAWHITE BUILD_ID"
+export BB_ENV_EXTRAWHITE="$BB_ENV_EXTRAWHITE BUILD_ID GIT_COMMITTER_NAME GIT_COMMITTER_EMAIL"
 
 if [ -z "$BUILD_TARGET" ]; then
   # Let's try to fetch build targets from configuration files

docker/local-build.sh

@@ -40,7 +40,7 @@ echo "$BUILD_NUMBER" > $WORKSPACE/.build_number
 CI_BUILD_ID="${BUILD_TIMESTAMP}-build-${BUILD_NUMBER}"
 
 # export other vars
-for var in WORKSPACE BASE_DISTRO BUILD_DIR BUILD_CACHE_DIR GIT_PROXY_COMMAND CI_BUILD_ID TARGET_MACHINE BB_ENV_EXTRAWHITE $BB_ENV_EXTRAWHITE; do
+for var in WORKSPACE BASE_DISTRO BUILD_DIR BUILD_CACHE_DIR GIT_PROXY_COMMAND GIT_COMMITTER_NAME GIT_COMMITTER_EMAIL CI_BUILD_ID TARGET_MACHINE BB_ENV_EXTRAWHITE $BB_ENV_EXTRAWHITE; do
 	RUN_ARGS+=(-e "$var=${!var}")
 done
 # Point HOME to WORKSPACE, don't polute real home.

meta-ostro-xt/recipes-kernel/linux/linux-yocto_4.4.bbappend

@@ -33,3 +33,8 @@ SRC_URI_remove = " \
     file://0001-iio-tmp006-Set-correct-iio-name.patch \
     file://0001-iio-si7020-Set-correct-iio-name.patch \
 "
+
+do_patch_prepend() {
+  export GIT_COMMITTER_NAME="${GIT_COMMITTER_NAME}"
+  export GIT_COMMITTER_EMAIL="${GIT_COMMITTER_EMAIL}"
+}