i2c-parport: Add SMBus alert support

Add support for the SMBus alert mechanism to the i2c-parport driver.
The ADM1032 evaluation board at least is properly wired for this.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Trent Piepho <tpiepho@freescale.com>
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 7c382f9..4d65546 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -581,6 +581,7 @@
 	tristate "Parallel port adapter"
 	depends on PARPORT
 	select I2C_ALGOBIT
+	select I2C_SMBUS
 	help
 	  This supports parallel port I2C adapters such as the ones made by
 	  Philips or Velleman, Analog Devices evaluation boards, and more.