freescale/imx6-sabresd: use global patch dir for U-Boot patches

The best practice is to use the BR2_GLOBAL_PATCH_DIR for patches against
U-Boot, not BR2_TARGET_UBOOT_CUSTOM_PATCH_DIR.

Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Tested-by: Vincent Stehlé <vincent.stehle@freescale.com>
Cc: Gilles Talis <gilles.talis@gmail.com>
Cc: Gary Bisson <bisson.gary@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

configs/freescale_imx6dlsabresd_defconfig

@@ -2,6 +2,9 @@
 BR2_arm=y
 BR2_cortex_a9=y
 
+# patches
+BR2_GLOBAL_PATCH_DIR="board/freescale/imx6sabresd/patches"
+
 # system
 BR2_TARGET_GENERIC_GETTY_PORT="ttymxc0"
 
@@ -25,4 +28,3 @@ BR2_TARGET_UBOOT_FORMAT_IMX=y
 BR2_TARGET_UBOOT_CUSTOM_GIT=y
 BR2_TARGET_UBOOT_CUSTOM_REPO_URL="git://git.freescale.com/imx/uboot-imx.git"
 BR2_TARGET_UBOOT_CUSTOM_REPO_VERSION="rel_imx_3.10.17_1.0.0_ga"
-BR2_TARGET_UBOOT_CUSTOM_PATCH_DIR="board/freescale/imx6sabresd"

configs/freescale_imx6qsabresd_defconfig

@@ -2,6 +2,9 @@
 BR2_arm=y
 BR2_cortex_a9=y
 
+# patches
+BR2_GLOBAL_PATCH_DIR="board/freescale/imx6sabresd/patches"
+
 # system
 BR2_TARGET_GENERIC_GETTY_PORT="ttymxc0"
 
@@ -25,4 +28,3 @@ BR2_TARGET_UBOOT_FORMAT_IMX=y
 BR2_TARGET_UBOOT_CUSTOM_GIT=y
 BR2_TARGET_UBOOT_CUSTOM_REPO_URL="git://git.freescale.com/imx/uboot-imx.git"
 BR2_TARGET_UBOOT_CUSTOM_REPO_VERSION="rel_imx_3.10.17_1.0.0_ga"
-BR2_TARGET_UBOOT_CUSTOM_PATCH_DIR="board/freescale/imx6sabresd"