ARM: imx: Kconfig: Adjust select after renamed config option

Commit 3f490a7 ("clocksource/drivers/vf-pit: Rename the VF PIT to NXP
PIT") renames the config VF_PIT_TIMER to NXP_PIT_TIMER, but it misses
adjusting a reference to VF_PIT_TIMER in arch/arm/mach-imx/Kconfig.

Adjust the config reference to the new name.

Fixes: 3f490a7 ("clocksource/drivers/vf-pit: Rename the VF PIT to NXP PIT")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@redhat.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Author: bulwahn

arch/arm/mach-imx/Kconfig

@@ -242,7 +242,7 @@ choice
 
 	config VF_USE_PIT_TIMER
 		bool "Use PIT timer"
-		select VF_PIT_TIMER
+		select NXP_PIT_TIMER
 		help
 		  Use SoC Periodic Interrupt Timer (PIT) as clocksource