irqchip: Add COMPILE_TEST support for IMX_INTMUX

Add COMPILE_TEST support to IMX_INTMUX driver for better compile
testing coverage.

Signed-off-by: Anson Huang <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: Anson-Huang

drivers/irqchip/Kconfig

@@ -458,7 +458,7 @@ config IMX_IRQSTEER
 	  Support for the i.MX IRQSTEER interrupt multiplexer/remapper.
 
 config IMX_INTMUX
-	def_bool y if ARCH_MXC
+	def_bool y if ARCH_MXC || COMPILE_TEST
 	select IRQ_DOMAIN
 	help
 	  Support for the i.MX INTMUX interrupt multiplexer.