mc_tcu3: Switch to hwilib instead of own hwinfo implementation

Use hwilib in vendorcode/siemens/hwilib to get fields from hwinfo
instead of having mainboard specific hwinfo code.
This patch does not change the functional behavior in any way.

Change-Id: Idb226a82a08b1b753f654c5cde106236e72f33c3
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/14506
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/mainboard/siemens/mc_tcu3/ptn3460.h b/src/mainboard/siemens/mc_tcu3/ptn3460.h
index 3e0c065..533607c 100644
--- a/src/mainboard/siemens/mc_tcu3/ptn3460.h
+++ b/src/mainboard/siemens/mc_tcu3/ptn3460.h
@@ -17,7 +17,6 @@
 #define PTN3460_H_
 
 #include <delay.h>
-#include "modhwinfo.h"
 #include "lcd_panel.h"
 
 #define PTN_SLAVE_ADR		0x20
@@ -66,7 +65,7 @@
 }__attribute__((packed));
 
 
-int ptn3460_init(char lcd_type, struct edidinfo *eib, struct shortinfo *sib);
+int ptn3460_init(char *hwi_block);
 int ptn3460_read_edid(u8 edid_num, u8 *data);
 int ptn3460_write_edid(u8 edid_num, u8 *data);
 int ptn_select_edid(u8 edid_num);