i2c: Drop I2C_CLIENT_INSMOD_2 to 8

These macros simply declare an enum, so drivers might as well declare
it themselves. This puts an end to the arbitrary limit of 8 chip types
per i2c driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>

drivers/hwmon/thmc50.c

@@ -35,7 +35,7 @@ MODULE_LICENSE("GPL");
 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
 
 /* Insmod parameters */
-I2C_CLIENT_INSMOD_2(thmc50, adm1022);
+enum chips { thmc50, adm1022 };
 
 static unsigned short adm1022_temp3[16];
 static unsigned int adm1022_temp3_num;