configs/asus_tinker_rk3288_defconfig: switch to zImage and bump Linux to 6.1.44, U-Boot to 2023.07

uImage is almost deprecated so let's switch to zImage. Let's also bump
Linux version to 6.1.44, U-Boot to 2023.07 and remove
BR2_TARGET_UBOOT_NEEDS_PYTHON3 since it's selected by
BR2_TARGET_UBOOT_NEEDS_PYLIBFDT.

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

board/asus/tinker/extlinux.conf

@@ -1,4 +1,4 @@
 label Tinker linux
-  kernel /boot/uImage
+  kernel /boot/zImage
   devicetree /boot/rk3288-tinker.dtb
   append console=ttyS2,115200n8 root=/dev/mmcblk0p1 rootwait

configs/asus_tinker_rk3288_defconfig

@@ -10,10 +10,9 @@ BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_6_1=y
 BR2_TARGET_UBOOT=y
 BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
 BR2_TARGET_UBOOT_CUSTOM_VERSION=y
-BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2022.10"
+BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2023.07"
 BR2_TARGET_UBOOT_BOARD_DEFCONFIG="tinker-rk3288"
 BR2_TARGET_UBOOT_NEEDS_DTC=y
-BR2_TARGET_UBOOT_NEEDS_PYTHON3=y
 BR2_TARGET_UBOOT_NEEDS_PYLIBFDT=y
 BR2_TARGET_UBOOT_NEEDS_OPENSSL=y
 BR2_TARGET_UBOOT_FORMAT_DTB_IMG=y
@@ -23,10 +22,8 @@ BR2_TARGET_UBOOT_SPL_NAME="spl/u-boot-spl-dtb.bin tpl/u-boot-tpl.bin"
 # Kernel
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.1.2"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.1.44"
 BR2_LINUX_KERNEL_DEFCONFIG="multi_v7"
-BR2_LINUX_KERNEL_UIMAGE=y
-BR2_LINUX_KERNEL_UIMAGE_LOADADDR="0x02000000"
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
 BR2_LINUX_KERNEL_INTREE_DTS_NAME="rk3288-tinker"
 BR2_LINUX_KERNEL_INSTALL_TARGET=y