gm45: Link cstates.c rather than including it.

The comment about necessity of include isn't true anymore as get_cst_entries
is not weak anymore so if it's not found, the linking would fail.

Change-Id: I4bf88208d63ac3e625f464c3907e2e1ea575dd9f
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/7375
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins)

src/mainboard/lenovo/x200/Makefile.inc

@@ -18,3 +18,4 @@
 ##
 
 ramstage-y += dock.c
+ramstage-y += cstates.c

src/mainboard/lenovo/x200/mainboard.c

@@ -32,9 +32,6 @@
 #include <ec/lenovo/h8/h8.h>
 #include "drivers/lenovo/lenovo.h"
 
-#include "cstates.c" /* Include it, as the linker won't find
-			the overloaded weak function in there. */
-
 static void fill_ssdt(void)
 {
 	drivers_lenovo_serial_ports_ssdt_generate("\\_SB.PCI0.LPCB", 0);

src/mainboard/roda/rk9/Makefile.inc

@@ -18,3 +18,5 @@
 ##
 
 ramstage-$(CONFIG_CARDBUS_PLUGIN_SUPPORT) += ti_pci7xx1.c
+ramstage-y += cstates.c
+

src/mainboard/roda/rk9/mainboard.c

@@ -26,9 +26,6 @@
 #include <pc80/keyboard.h>
 #include <ec/acpi/ec.h>
 
-#include "cstates.c" /* Include it, as the linker won't find
-			the overloaded weak function in there. */
-
 static void ec_setup(void)
 {
 	/* Thermal limits?  Values are from ectool's ram dump. */