gpio: add MODULE_DEVICE_TABLE

The device table is required to load modules based on modaliases.

After adding MODULE_DEVICE_TABLE, below entries will be added to
modules.pcimap:

  pch_gpio             0x00008086 0x00008803 0xffffffff 0xffffffff 0x00000000 0x00000000 0x0
  ml_ioh_gpio          0x000010db 0x0000802e 0xffffffff 0xffffffff 0x00000000 0x00000000 0x0

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/gpio/ml_ioh_gpio.c

@@ -326,6 +326,7 @@ static DEFINE_PCI_DEVICE_TABLE(ioh_gpio_pcidev_id) = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x802E) },
 	{ 0, }
 };
+MODULE_DEVICE_TABLE(pci, ioh_gpio_pcidev_id);
 
 static struct pci_driver ioh_gpio_driver = {
 	.name = "ml_ioh_gpio",

drivers/gpio/pch_gpio.c

@@ -286,6 +286,7 @@ static DEFINE_PCI_DEVICE_TABLE(pch_gpio_pcidev_id) = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x8803) },
 	{ 0, }
 };
+MODULE_DEVICE_TABLE(pci, pch_gpio_pcidev_id);
 
 static struct pci_driver pch_gpio_driver = {
 	.name = "pch_gpio",