package/qt6base: avoid enabling both desktop and es2 opengl

Fixes the following error:

ERROR: Feature "opengles2": Forcing to "ON" breaks its condition:
    NOT WIN32 AND NOT WATCHOS AND NOT QT_FEATURE_opengl_desktop AND GLESv2_FOUND
Condition values dump:
    WIN32 = ""
    WATCHOS = "0"
    QT_FEATURE_opengl_desktop = "ON"
    GLESv2_FOUND = "TRUE"

CMake Error at cmake/QtBuildInformation.cmake:209 (message):
  Check the configuration messages for an error that has occurred.
Call Stack (most recent call first):
  cmake/QtBuildInformation.cmake:39 (qt_configure_print_summary)
  cmake/QtBuildRepoHelpers.cmake:332 (qt_print_feature_summary)
  CMakeLists.txt:208 (qt_build_repo_end)

To recreate the error, use the following defconfig (based on freescale_imx8mmevk_defconfig):

BR2_aarch64=y
BR2_ARM_FPU_VFPV3=y
BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_10=y
BR2_TOOLCHAIN_BUILDROOT_CXX=y
BR2_GLOBAL_PATCH_DIR="board/freescale/common/patches"
BR2_TARGET_GENERIC_GETTY_PORT="ttymxc1"
BR2_ROOTFS_POST_IMAGE_SCRIPT="board/freescale/common/imx/imx8-bootloader-prepare.sh board/freescale/common/imx/post-image.sh"
BR2_ROOTFS_POST_SCRIPT_ARGS="${UBOOT_DIR}/arch/arm/dts/imx8mm-evk.dtb"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_TARBALL=y
BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call github,nxp-imx,linux-imx,lf-5.10.y-1.0.0)/linux-imx-lf-5.10.y-1.0.0.tar.gz"
BR2_LINUX_KERNEL_DEFCONFIG="imx_v8"
BR2_LINUX_KERNEL_DTS_SUPPORT=y
BR2_LINUX_KERNEL_INTREE_DTS_NAME="freescale/imx8mm-evk freescale/imx8mm-evk-revb-qca-wifi"
BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
BR2_PACKAGE_QT6=y
BR2_PACKAGE_QT6BASE_GUI=y
BR2_PACKAGE_QT6BASE_OPENGL=y
BR2_PACKAGE_FREESCALE_IMX=y
BR2_PACKAGE_FREESCALE_IMX_PLATFORM_IMX8MM=y
BR2_PACKAGE_FIRMWARE_IMX=y
BR2_PACKAGE_IMX_GPU_VIV=y
BR2_PACKAGE_KERNEL_MODULE_IMX_GPU_VIV=y
BR2_TARGET_ROOTFS_EXT2=y
BR2_TARGET_ROOTFS_EXT2_4=y
BR2_TARGET_ROOTFS_EXT2_SIZE="256M"
BR2_TARGET_ARM_TRUSTED_FIRMWARE=y
BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_TARBALL=y
BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_TARBALL_LOCATION="$(call github,nxp-imx,imx-atf,lf-5.10.y-1.0.0)/imx-atf-lf-5.10.y-1.0.0.tar.gz"
BR2_TARGET_ARM_TRUSTED_FIRMWARE_PLATFORM="imx8mm"
BR2_TARGET_ARM_TRUSTED_FIRMWARE_BL31=y
BR2_TARGET_UBOOT=y
BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
BR2_TARGET_UBOOT_CUSTOM_TARBALL=y
BR2_TARGET_UBOOT_CUSTOM_TARBALL_LOCATION="$(call github,nxp-imx,uboot-imx,lf-5.10.y-1.0.0)/uboot-imx-lf-5.10.y-1.0.0.tar.gz"
BR2_TARGET_UBOOT_BOARD_DEFCONFIG="imx8mm_evk"
BR2_TARGET_UBOOT_NEEDS_DTC=y
BR2_TARGET_UBOOT_FORMAT_CUSTOM=y
BR2_TARGET_UBOOT_FORMAT_CUSTOM_NAME="u-boot-nodtb.bin"
BR2_TARGET_UBOOT_SPL=y
BR2_PACKAGE_HOST_DOSFSTOOLS=y
BR2_PACKAGE_HOST_GENIMAGE=y
BR2_PACKAGE_HOST_IMX_MKIMAGE=y
BR2_PACKAGE_HOST_MTOOLS=y
BR2_PACKAGE_HOST_UBOOT_TOOLS=y
BR2_PACKAGE_HOST_UBOOT_TOOLS_FIT_SUPPORT=y

Signed-off-by: Roy Kollen Svendsen <roy.kollen.svendsen@akersolutions.com>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>
(cherry picked from commit e4b8380503)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/qt6/qt6base/qt6base.mk

@@ -259,10 +259,15 @@ QT6BASE_CONF_OPTS += -DFEATURE_eglfs=OFF
 endif
 
 ifeq ($(BR2_PACKAGE_QT6BASE_OPENGL_DESKTOP),y)
-QT6BASE_CONF_OPTS += -DFEATURE_opengl=ON -DFEATURE_opengl_desktop=ON
+QT6BASE_CONF_OPTS += \
+	-DFEATURE_opengl=ON \
+	-DFEATURE_opengl_desktop=ON
 QT6BASE_DEPENDENCIES += libgl
 else ifeq ($(BR2_PACKAGE_QT6BASE_OPENGL_ES2),y)
-QT6BASE_CONF_OPTS += -DFEATURE_opengl=ON -DFEATURE_opengles2=ON
+QT6BASE_CONF_OPTS += \
+	-DFEATURE_opengl=ON \
+	-DFEATURE_opengles2=ON \
+	-DFEATURE_opengl_desktop=OFF
 QT6BASE_DEPENDENCIES += libgles
 else
 QT6BASE_CONF_OPTS += -DFEATURE_opengl=OFF -DINPUT_opengl=no