HID: mcp2221: add gpiolib dependency

Without gpiolib, this driver fails to link:

arm-linux-gnueabi-ld: drivers/hid/hid-mcp2221.o: in function `mcp2221_probe':
hid-mcp2221.c:(.text+0x1b0): undefined reference to `devm_gpiochip_add_data'
arm-linux-gnueabi-ld: drivers/hid/hid-mcp2221.o: in function `mcp_gpio_get':
hid-mcp2221.c:(.text+0x30c): undefined reference to `gpiochip_get_data'

Fixes: 328de1c ("HID: mcp2221: add GPIO functionality support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Rishi Gupta <gupt21@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/Kconfig

@@ -1155,6 +1155,7 @@ config HID_ALPS
 config HID_MCP2221
 	tristate "Microchip MCP2221 HID USB-to-I2C/SMbus host support"
 	depends on USB_HID && I2C
+	depends on GPIOLIB
 	---help---
 	Provides I2C and SMBUS host adapter functionality over USB-HID
 	through MCP2221 device.