post-image: Do not hardcode the genimage.cfg path

Instead of hardcoding the genimage.cfg path, let's add a BOARD_DIR
variable to improve readability.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

board/freescale/imx6ulevk/post-image.sh

@@ -1,6 +1,7 @@
 #!/usr/bin/env bash
 
-GENIMAGE_CFG="board/freescale/imx6ulevk/genimage.cfg"
+BOARD_DIR="$(dirname $0)"
+GENIMAGE_CFG="${BOARD_DIR}/genimage.cfg"
 GENIMAGE_TMP="${BUILD_DIR}/genimage.tmp"
 
 rm -rf "${GENIMAGE_TMP}"

board/via/imx6_vab820/post-image.sh

@@ -1,6 +1,7 @@
 #!/bin/bash
 
-GENIMAGE_CFG="board/via/imx6_vab820/genimage.cfg"
+BOARD_DIR="$(dirname $0)"
+GENIMAGE_CFG="${BOARD_DIR}/genimage.cfg"
 GENIMAGE_TMP="${BUILD_DIR}/genimage.tmp"
 
 rm -rf "${GENIMAGE_TMP}"

board/wandboard/post-image.sh

@@ -1,6 +1,7 @@
 #!/usr/bin/env bash
 
-GENIMAGE_CFG="board/wandboard/genimage.cfg"
+BOARD_DIR="$(dirname $0)"
+GENIMAGE_CFG="${BOARD_DIR}/genimage.cfg"
 GENIMAGE_TMP="${BUILD_DIR}/genimage.tmp"
 
 rm -rf "${GENIMAGE_TMP}"