mb/lenovo/*/romstage: Remove explicit power-on defaults

Change-Id: Ib359e4039f87bb87faac040f24f70cc0988c0ea8
Signed-off-by: Peter Lemenkov <lemenkov@gmail.com>
Reviewed-on: https://review.coreboot.org/29107
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/mainboard/lenovo/l520/romstage.c

@@ -38,8 +38,8 @@ void pch_enable_lpc(void)
 
 void mainboard_rcba_config(void)
 {
-	RCBA32(0x3414) = 0x00000000;
 }
+
 const struct southbridge_usb_port mainboard_usb_ports[] = {
 	{ 1, 0, -1 },
 	{ 1, 0, -1 },

src/mainboard/lenovo/t420/romstage.c

@@ -65,7 +65,6 @@ void pch_enable_lpc(void)
 
 void mainboard_rcba_config(void)
 {
-	RCBA32(BUC) = 0;
 }
 
 // OC3 set in bios to port 2-7, OC7 set in bios to port 10-13

src/mainboard/lenovo/t420s/romstage.c

@@ -67,7 +67,6 @@ void pch_enable_lpc(void)
 
 void mainboard_rcba_config(void)
 {
-	RCBA32(BUC) = 0;
 }
 
 const struct southbridge_usb_port mainboard_usb_ports[] = {

src/mainboard/lenovo/t430s/romstage.c

@@ -40,7 +40,6 @@ void pch_enable_lpc(void)
 
 void mainboard_rcba_config(void)
 {
-	RCBA32(BUC) = 0;
 }
 
 const struct southbridge_usb_port mainboard_usb_ports[] = {

src/mainboard/lenovo/t520/romstage.c

@@ -77,7 +77,6 @@ void pch_enable_lpc(void)
 
 void mainboard_rcba_config(void)
 {
-	RCBA32(BUC) = 0;
 }
 
 const struct southbridge_usb_port mainboard_usb_ports[] = {

src/mainboard/lenovo/t530/romstage.c

@@ -69,7 +69,6 @@ void pch_enable_lpc(void)
 
 void mainboard_rcba_config(void)
 {
-	RCBA32(BUC) = 0;
 }
 
 void mainboard_early_init(int s3resume)

src/mainboard/lenovo/x220/romstage.c

@@ -50,7 +50,6 @@ void pch_enable_lpc(void)
 
 void mainboard_rcba_config(void)
 {
-	RCBA32(BUC) = 0;
 }
 
 void mainboard_fill_pei_data(struct pei_data *pei_data)

src/mainboard/lenovo/x230/romstage.c

@@ -48,7 +48,6 @@ void pch_enable_lpc(void)
 
 void mainboard_rcba_config(void)
 {
-	RCBA32(BUC) = 0;
 }
 
 const struct southbridge_usb_port mainboard_usb_ports[] = {