mfd: compile fix for twl4030 renaming

mfd: compile fix for twl4030 renaming

Caused by commit 3288f688a5b6f86d80f02b11165fefaacc71e7e4 ("MFD:
twl4030: add twl4030_codec MFD as a new child to the core") interacting
with commit 8b457966e7aea0f602cc83f04d9cb4909489c859 ("mfd: Rename
twl4030* driver files to enable re-use").

This file seems to have been missed in the renaming.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>