configs/orange-pi-zero-plus2: bump kernel and u-boot versions

Bump versions:
- use U-Boot 2008.01
- use Linux kernel v4.15.2

Drop patch with dts sdcard fix since it has been
merged to Linux v4.15.

Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

board/orangepi/orangepi-zero-plus2/patches/linux/linux-0001-arm64-dts-orange-pi-zero-plus2-fix-sdcard-detect.patch

@@ -1,30 +0,0 @@
-From f88e9301948173dd35afad4a6939092c7f269aed Mon Sep 17 00:00:00 2001
-From: Sergey Matyukevich <geomatsi@gmail.com>
-Date: Fri, 3 Nov 2017 22:58:54 +0300
-Subject: [PATCH] arm64: dts: orange-pi-zero-plus2: fix sdcard detect
-
-The sdcard detect pin on orange-pi-zero-plus2 is pulled up.
-Fix cd-gpio description to enable sdcard detect.
-
-Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>
-Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
----
- arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus2.dts | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus2.dts b/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus2.dts
-index b6b7a56..a42fd79 100644
---- a/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus2.dts
-+++ b/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus2.dts
-@@ -71,7 +71,7 @@
- 	pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin>;
- 	vmmc-supply = <&reg_vcc3v3>;
- 	bus-width = <4>;
--	cd-gpios = <&pio 5 6 GPIO_ACTIVE_HIGH>;
-+	cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>;
- 	status = "okay";
- };
- 
--- 
-1.9.1
-

configs/orangepi_zero_plus2_defconfig

@@ -2,11 +2,8 @@ BR2_aarch64=y
 BR2_cortex_a53=y
 BR2_ARM_FPU_VFPV4=y
 
-# Linux headers same as kernel, a 4.14 series
-BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_14=y
-
-# Patch dir
-BR2_GLOBAL_PATCH_DIR="board/orangepi/orangepi-zero-plus2/patches"
+# Linux headers same as kernel, a 4.15 series
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_15=y
 
 # Firmware
 BR2_TARGET_ARM_TRUSTED_FIRMWARE=y
@@ -20,7 +17,7 @@ BR2_TARGET_ARM_TRUSTED_FIRMWARE_BL31=y
 BR2_TARGET_UBOOT=y
 BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
 BR2_TARGET_UBOOT_CUSTOM_VERSION=y
-BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2017.11"
+BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2018.01"
 BR2_TARGET_UBOOT_BOARD_DEFCONFIG="orangepi_zero_plus2"
 BR2_TARGET_UBOOT_NEEDS_DTC=y
 BR2_TARGET_UBOOT_NEEDS_ATF_BL31=y
@@ -34,7 +31,7 @@ BR2_TARGET_UBOOT_BOOT_SCRIPT_SOURCE="board/orangepi/orangepi-zero-plus2/boot.cmd
 # Kernel
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.14"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.15.2"
 BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG=y
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
 BR2_LINUX_KERNEL_INTREE_DTS_NAME="allwinner/sun50i-h5-orangepi-zero-plus2"