media: tc358746: select CONFIG_GENERIC_PHY

The tc358746 driver selects CONFIG_GENERIC_PHY_MIPI_DPHY and links to
that, but this fails when CONFIG_GENERIC_PHY is disabled, because Kbuild
then never enters the drivers/phy directory for building object files:

ERROR: modpost: "phy_mipi_dphy_get_default_config_for_hsclk" [drivers/media/i2c/tc358746.ko] undefined!

Add an explicit 'select GENERIC_PHY' here to ensure that the directory
is entered, and add another dependency on that symbol so make it
more obvious what is going on if another driver has the same problem,
as this will produce a Kconfig warning.

Link: https://lore.kernel.org/linux-media/[e-mail]
Fixes: 80a21da360516 ("media: tc358746: add Toshiba TC358746 Parallel to CSI-2 bridge driver")
Signed-off-by: Arnd Bergmann <[e-mail]>
Reviewed-by: Marco Felsch <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/i2c/Kconfig

···
 	select VIDEO_V4L2_SUBDEV_API
 	select MEDIA_CONTROLLER
 	select V4L2_FWNODE
+	select GENERIC_PHY
 	select GENERIC_PHY_MIPI_DPHY
 	select REGMAP_I2C
 	help

drivers/phy/Kconfig

···
 
 config GENERIC_PHY_MIPI_DPHY
 	bool
+	depends on GENERIC_PHY
 	help
 	  Generic MIPI D-PHY support.