configs/stm32mp157_dk: enable modetest, evtest and Qt5

As explained in our blog post "Building a Linux system for the
STM32MP1: enabling Qt5 for graphical applications" [1], this commit
enables:

 - The tests programs of libdrm, which include "modetest" to test
   display panels

 - The evtest program, to test input devices

 - The Qt5 library and its example applications.

[1] https://bootlin.com/blog/building-a-linux-system-for-the-stm32mp1-enabling-qt5-for-graphical-applications/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

configs/stm32mp157_dk_defconfig

@@ -13,6 +13,15 @@ BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/stmicroelectronics/stm32mp157-dk/linu
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
 BR2_LINUX_KERNEL_INTREE_DTS_NAME="stm32mp157c-dk2"
 BR2_LINUX_KERNEL_INSTALL_TARGET=y
+BR2_PACKAGE_DEJAVU=y
+BR2_PACKAGE_QT5=y
+BR2_PACKAGE_QT5BASE_EXAMPLES=y
+BR2_PACKAGE_QT5BASE_GUI=y
+BR2_PACKAGE_QT5BASE_WIDGETS=y
+BR2_PACKAGE_QT5BASE_FONTCONFIG=y
+BR2_PACKAGE_EVTEST=y
+BR2_PACKAGE_LIBDRM=y
+BR2_PACKAGE_LIBDRM_INSTALL_TESTS=y
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_4=y
 BR2_TARGET_ROOTFS_EXT2_SIZE="120M"