i2c: mux: reg: simplify register size checking

Checking was done at three different locations, just do it once and
properly at probing time.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Tested-by: York Sun <yorksun@freescale.com>
This commit is contained in:
Wolfram Sang 2015-08-20 23:40:46 +02:00
commit fce388afd6