rockchip: Minor fixes for generating version.h

Signed-off-by: hmz007 <hmz007@gmail.com>

hardware/rockchip/libmpimmz/Android.bp

@@ -26,7 +26,6 @@ genrule {
     srcs: libmpimmz_src + [
         "version.sh",
         "version.h.template",
-        ".git/HEAD"
     ],
     out: ["version.h"],
     cmd: "bash $(location version.sh) < $(in) > $(out)",

hardware/rockchip/libmpimmz/version.sh

@@ -1,14 +1,21 @@
 #!/bin/bash
 rm -f version.h
 
-COMMIT_INFO=$(cd $(dirname $0) && git log -1 --oneline --date=short --pretty=format:"%h date: %cd author: %<|(20)%an")
-BUILD_TIME=$(date "+%G-%m-%d %H:%M:%S")
-MPI_MMZ_VERSION="build:$BUILD_TIME   git-$COMMIT_INFO"
+CURRENTDIR=$(dirname $0)
+
+if [ -d $CURRENTDIR/.git ]; then
+	COMMIT_INFO=$(cd $CURRENTDIR && \
+		git log -1 --oneline --date=short --pretty=format:"%h date: %cd author: %<|(20)%an")
+else
+	COMMIT_INFO="e504f0e date: 2021-06-08 author: Meiyou Chen"
+fi
+
+MPI_MMZ_VERSION="git-$COMMIT_INFO"
 
 #Only when compiling with CMAKE in linux, will the current directory generate version.h.
 if [ $TARGET_PRODUCT ];then
-	cat $(dirname $0)/version.h.template | sed "s/\$FULL_VERSION/$MPI_MMZ_VERSION/g"
+	cat $CURRENTDIR/version.h.template | sed "s/\$FULL_VERSION/$MPI_MMZ_VERSION/g"
 else
-	cat $(dirname $0)/version.h.template | sed "s/\$FULL_VERSION/$MPI_MMZ_VERSION/g" > $(dirname $0)/version.h
+	cat $CURRENTDIR/version.h.template | sed "s/\$FULL_VERSION/$MPI_MMZ_VERSION/g" > $(dirname $0)/version.h
 	echo "Generated version.h"
 fi