platform/chrome: wilco_ec: Allow wilco to be compiled in COMPILE_TEST

Enable this Kconfig on COMPILE_TEST enabled configs so we can get more
build coverage.
Signed-off-by: NStephen Boyd <swboyd@chromium.org>
Signed-off-by: NEnric Balletbo i Serra <enric.balletbo@collabora.com>

drivers/platform/chrome/wilco_ec/Kconfig

 # SPDX-License-Identifier: GPL-2.0-only
 config WILCO_EC
 	tristate "ChromeOS Wilco Embedded Controller"
-	depends on ACPI && X86 && CROS_EC_LPC && LEDS_CLASS
+	depends on X86 || COMPILE_TEST
+	depends on ACPI && CROS_EC_LPC && LEDS_CLASS
 	help
 	  If you say Y here, you get support for talking to the ChromeOS
 	  Wilco EC over an eSPI bus. This uses a simple byte-level protocol