Introduce a config whether dock is inited in romstage or not

Instead of depending on exact mobo configure general characteristic whether
dock is configured in romstage or ramstage.

X60 and T60 have superio in dock so it needs to be inited to get serial, so
it should be inited in romstage.

On X201 there is nothing useful that early in boot but it's needed to init more
to get dock working, in particular EC init needs to be done first.
Change-Id: If5072e3dec883a94cd2d5643a92f7f6c3c9feee9
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4294
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/src/mainboard/lenovo/x60/Kconfig b/src/mainboard/lenovo/x60/Kconfig
index 72aeef8..7ed2665 100644
--- a/src/mainboard/lenovo/x60/Kconfig
+++ b/src/mainboard/lenovo/x60/Kconfig
@@ -25,6 +25,7 @@
 	select USE_OPTION_TABLE
 	select MAINBOARD_HAS_NATIVE_VGA_INIT
 	select EARLY_CBMEM_INIT
+	select H8_DOCK_EARLY_INIT
 
 config MAINBOARD_DIR
 	string