hwmon/smsc47m1: Convert to a platform driver

Convert the smsc47m1 driver from the nonsensical i2c-isa hack to a
regular platform driver.
Signed-off-by: Jean Delvare <khali@linux-fr.org>

drivers/hwmon/Kconfig

@@ -416,8 +416,7 @@ config SENSORS_SIS5595
 
 config SENSORS_SMSC47M1
 	tristate "SMSC LPC47M10x and compatibles"
-	depends on HWMON && I2C
-	select I2C_ISA
+	depends on HWMON
 	help
 	  If you say yes here you get support for the integrated fan
 	  monitoring and control capabilities of the SMSC LPC47B27x,