[Buildroot] [git commit branch/next] configs/zynq_zc706: uboot: bump to xilinx-v2018.2 (fixes build)

[Thomas Petazzoni]

commit: https://git.buildroot.net/buildroot/commit/?id=c6fc6948b65123379c041dd6205d439fb64cf6fe
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/next

Bump to the most recent Xilinx release.

Fixes:
  .../output/host/include/libfdt_env.h:71:30: error: conflicting types for ‘fdt64_t’
  .../output/host/include/libfdt_env.h:91:24: error: expected ‘)’ before ‘x’
  .../output/host/include/libfdt.h:150:21: error: redefinition of ‘fdt_offset_ptr_w’
...and many, many other similar errors.

[Build-tested only]
Tested-by: Luca Ceresoli <luca at lucaceresoli.net>
Signed-off-by: Luca Ceresoli <luca at lucaceresoli.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
---
 configs/zynq_zc706_defconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configs/zynq_zc706_defconfig b/configs/zynq_zc706_defconfig
index 758069b30f..e8019177d2 100644
--- a/configs/zynq_zc706_defconfig
+++ b/configs/zynq_zc706_defconfig
@@ -20,7 +20,7 @@ BR2_TARGET_UBOOT=y
 BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
 BR2_TARGET_UBOOT_CUSTOM_GIT=y
 BR2_TARGET_UBOOT_CUSTOM_REPO_URL="https://github.com/Xilinx/u-boot-xlnx.git"
-BR2_TARGET_UBOOT_CUSTOM_REPO_VERSION="xilinx-v2017.3"
+BR2_TARGET_UBOOT_CUSTOM_REPO_VERSION="xilinx-v2018.2"
 BR2_TARGET_UBOOT_BOARD_DEFCONFIG="zynq_zc706"
 BR2_TARGET_UBOOT_NEEDS_DTC=y
 BR2_TARGET_UBOOT_NEEDS_OPENSSL=y