serial: sc16is7xx: Kconfig: allow building with COMPILE_TEST

Add COMPILE_TEST as an option to allow test building the driver.

Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/all/20240604083159.d984dd08741396ea4ca46418@hugovil.com/raw
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Link: https://patch.msgid.link/20251027142957.1032073-11-hugo@hugovil.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: hvilleneuvedoo

drivers/tty/serial/Kconfig

@@ -1044,7 +1044,7 @@ config SERIAL_SCCNXP_CONSOLE
 
 config SERIAL_SC16IS7XX
 	tristate "NXP SC16IS7xx UART support"
-	depends on SPI_MASTER || I2C
+	depends on SPI_MASTER || I2C || COMPILE_TEST
 	select SERIAL_CORE
 	select SERIAL_SC16IS7XX_SPI if SPI_MASTER
 	select SERIAL_SC16IS7XX_I2C if I2C