mb/google/guybrush: move EC switch selection from ChromeOS to Vboot

This is a vboot feature, not a ChromeOS one, and unless selected by
vboot, compilation will fail in the non-ChromeOS + vboot build case.

TEST=build/boot guybrush w/vboot, w/o ChromeOS

Change-Id: I3108bcc8dfeacd99c9f5d36bd915d590292fef00
Signed-off-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67994
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/guybrush/Kconfig

@@ -50,10 +50,8 @@ config BOARD_SPECIFIC_OPTIONS
 	select SYSTEM_TYPE_LAPTOP
 	select TPM_GOOGLE_CR50
 
-config CHROMEOS
-	select EC_GOOGLE_CHROMEEC_SWITCHES
-
 config VBOOT
+	select EC_GOOGLE_CHROMEEC_SWITCHES
 	select VBOOT_LID_SWITCH
 	select VBOOT_SEPARATE_VERSTAGE