drivers: gpio: invert I2C config dependency for MCP23xxx

The GPIO_MCP230XX config currently depends on the I2C config. This means
that the board/SoC must enable the I2C config to support MCP23xxx devices.
Inverting this dependency allows declaring GPIO_MCP230XX directly in the
board/SoC defconfig without explicitly enabling I2C.

Signed-off-by: Arnaud Pouliquen <[email protected]>
Suggested-by Fin Maaß <[email protected]>

Author: arnopo

drivers/gpio/Kconfig.mcp23xxx

@@ -17,7 +17,7 @@ menuconfig GPIO_MCP230XX
 	           DT_HAS_MICROCHIP_MCP23016_ENABLED || \
 	           DT_HAS_MICROCHIP_MCP23017_ENABLED || \
 	           DT_HAS_MICROCHIP_MCP23018_ENABLED
-	depends on I2C
+	select I2C
 	select GPIO_MCP23XXX
 	help
 	  Enable driver for MCP230XX I2C-based GPIO chip.