viafb: enable I2C for CRT

This patch enables the I2C port to talk with the CRT. This allows adding
EDID reading and parsing capability for CRTs.
Just a small preparation, no notable changes in user experience yet.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Cc: Joseph Chan <JosephChan@via.com.tw>

drivers/video/via/via-core.c

@@ -20,7 +20,7 @@
  * The default port config.
  */
 static struct via_port_cfg adap_configs[] = {
-	[VIA_PORT_26]	= { VIA_PORT_I2C,  VIA_MODE_OFF, VIASR, 0x26 },
+	[VIA_PORT_26]	= { VIA_PORT_I2C,  VIA_MODE_I2C, VIASR, 0x26 },
 	[VIA_PORT_31]	= { VIA_PORT_I2C,  VIA_MODE_I2C, VIASR, 0x31 },
 	[VIA_PORT_25]	= { VIA_PORT_GPIO, VIA_MODE_GPIO, VIASR, 0x25 },
 	[VIA_PORT_2C]	= { VIA_PORT_GPIO, VIA_MODE_I2C, VIASR, 0x2c },