Rockchip: Fix missing $ in release script

Author: Radostan Riedel

projects/Rockchip/bootloader/release

@@ -31,7 +31,7 @@ mkdir -p $RELEASE_DIR/3rdparty/bootloader
   fi
 
   LINUX_DTS_DIR=$(get_build_dir linux)/arch/$TARGET_KERNEL_ARCH/boot/dts
-  for dtb in $LINUX_DTS_DIR/*.dtb LINUX_DTS_DIR/*/*.dtb; do
+  for dtb in $LINUX_DTS_DIR/*.dtb $LINUX_DTS_DIR/*/*.dtb; do
     if [ -f $dtb ]; then
       cp -a $dtb $RELEASE_DIR/3rdparty/bootloader
     fi