gen_build_files: use raw reads (ones which don't eat backslashes)

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/scripts/gen_build_files.sh b/scripts/gen_build_files.sh
index 2baefa2..73c9916 100755
--- a/scripts/gen_build_files.sh
+++ b/scripts/gen_build_files.sh
@@ -7,7 +7,7 @@
 
 srctree="$1"
 
-find -type d | while read; do
+find -type d | while read -r; do
 	d="$REPLY"
 
 	src="$srctree/$d/Kbuild.src"
@@ -17,7 +17,7 @@
 
 		s=`sed -n 's@^//kbuild:@@p' -- "$srctree/$d"/*.c`
 		echo "# DO NOT EDIT. This file is generated from Kbuild.src" >"$dst.$$.tmp"
-		while read; do
+		while read -r; do
 			test x"$REPLY" = x"INSERT" && REPLY="$s"
 			printf "%s\n" "$REPLY"
 		done <"$src" >>"$dst.$$.tmp"
@@ -37,7 +37,7 @@
 
 		s=`sed -n 's@^//config:@@p' -- "$srctree/$d"/*.c`
 		echo "# DO NOT EDIT. This file is generated from Config.src" >"$dst.$$.tmp"
-		while read; do
+		while read -r; do
 			test x"$REPLY" = x"INSERT" && REPLY="$s"
 			printf "%s\n" "$REPLY"
 		done <"$src" >>"$dst.$$.tmp"