dm: pch: Remove pch_get_version op

pch_get_version op was only used by the ich spi controller driver,
and does not really provide a good identification of pch controller
so far, since we see plenty of Intel PCH chipsets and one differs
from another a lot, which is not simply either a PCHV_7 or PCHV_9.
Now that ich spi controller driver was updated to not get such info
from pch, the pch_get_version op is useless now.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>

drivers/pch/pch-uclass.c

@@ -23,16 +23,6 @@ int pch_get_sbase(struct udevice *dev, ulong *sbasep)
 	return ops->get_sbase(dev, sbasep);
 }
 
-enum pch_version pch_get_version(struct udevice *dev)
-{
-	struct pch_ops *ops = pch_get_ops(dev);
-
-	if (!ops->get_version)
-		return -ENOSYS;
-
-	return ops->get_version(dev);
-}
-
 int pch_set_spi_protect(struct udevice *dev, bool protect)
 {
 	struct pch_ops *ops = pch_get_ops(dev);

drivers/pch/pch7.c

@@ -22,11 +22,6 @@ static int pch7_get_sbase(struct udevice *dev, ulong *sbasep)
 	return 0;
 }
 
-static enum pch_version pch7_get_version(struct udevice *dev)
-{
-	return PCHV_7;
-}
-
 static int pch7_set_spi_protect(struct udevice *dev, bool protect)
 {
 	uint8_t bios_cntl;
@@ -44,7 +39,6 @@ static int pch7_set_spi_protect(struct udevice *dev, bool protect)
 
 static const struct pch_ops pch7_ops = {
 	.get_sbase	= pch7_get_sbase,
-	.get_version	= pch7_get_version,
 	.set_spi_protect = pch7_set_spi_protect,
 };
 

drivers/pch/pch9.c

@@ -20,14 +20,8 @@ static int pch9_get_sbase(struct udevice *dev, ulong *sbasep)
 	return 0;
 }
 
-static enum pch_version pch9_get_version(struct udevice *dev)
-{
-	return PCHV_9;
-}
-
 static const struct pch_ops pch9_ops = {
 	.get_sbase	= pch9_get_sbase,
-	.get_version	= pch9_get_version,
 };
 
 static const struct udevice_id pch9_ids[] = {