video: mtl017: fix driver name variable ...

It look like a copy-paste bug that the twl_driver name
was used.
Rename to the more sensible mtl_driver

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: mtl017: Make sure errno is not used as a regulator pointer ...

Since regulator_get() can return an errno via regulator pointer, we
need to make sure we handle that case without passing bogus pointers
around.

Add code to convert mtl017->regulator to a dummy regulator if
regulator_get() fails.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i2c: introduce device_i2c_driver() macro ...

Add macro and dependency to avoid boilerplate code. Since now simple
i2c drivers only have to include the i2c.h header and call the
device_i2c_driver() macro to register a i2c device driver.

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: Add MTL017 LVDS encoder support ...

The MTL017 is found on the Efika Smartbook. Not much is known about
this chip, so this driver only programs a register dump which is suitable
for some panels.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>