Via EPIA MII specific Linux config is (surprise) specific to the Via EPIA MII

and only should be selectable when BR2_TARGET_VIA_EPIA_MII has first been
selected.

target/device/Via/Config.in

@@ -9,6 +9,7 @@ config BR2_TARGET_VIA_EPIA_MII
 config BR2_PACKAGE_LINUX
 	bool "linux"
 	default n
+	depends BR2_TARGET_VIA_EPIA_MII
 	help
 	    The Linux kernel.