pwm: lpss-*: Don't set driver data

The drivers don't make use of driver data, neither in the variant
pci_get_drvdata() nor as platform_get_drvdata() nor as
dev_get_drvdata(). Drop setting driver data accordingly.

Link: https://lore.kernel.org/r/25671b7562d96b67fd05b3fa6fc76538ddf5914f.1707900770.git.u.kleine-koenig@pengutronix.de


Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>