configs: imxrt1050-evk: enable imx gpt timer as tick-timer

Let's enable imx-gpt-timer in imx1050-evk defconfig.

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
diff --git a/configs/imxrt1050-evk_defconfig b/configs/imxrt1050-evk_defconfig
index d03572e..9c8bdb0 100644
--- a/configs/imxrt1050-evk_defconfig
+++ b/configs/imxrt1050-evk_defconfig
@@ -64,6 +64,7 @@
 CONFIG_FSL_LPUART=y
 CONFIG_TIMER=y
 CONFIG_SPL_TIMER=y
+CONFIG_IMX_GPT_TIMER=y
 CONFIG_DM_VIDEO=y
 CONFIG_BACKLIGHT_GPIO=y
 CONFIG_SYS_WHITE_ON_BLACK=y