Rock-4D: Update KERNEL_TEST_TARGET to edge

Author: HeyMeco

config/boards/radxa-rock-4d.conf

@@ -5,7 +5,7 @@ BOARDFAMILY="rk35xx"
 BOARD_MAINTAINER="HeyMeco"
 BOOTCONFIG="rock-4d-spi-rk3576_defconfig"
 KERNEL_TARGET="vendor,edge"
-KERNEL_TEST_TARGET="vendor,edge"
+KERNEL_TEST_TARGET="edge"
 FULL_DESKTOP="yes"
 BOOT_LOGO="desktop"
 BOOT_FDT_FILE="rockchip/rk3576-rock-4d-spi.dtb"