cpufreq: omap: remove driver

cpufreq: omap: remove driver

The omap-cpufreq driver is not used in the corresponding defconfigs.
The pseudo platform device to use it was removed by
commit cb6675d6a868 ("ARM: OMAP2+: Remove legacy PM init")
10 years ago.

Checking if there is any need to reactivate it:
For omap3, dra7 there is ti-cpufreq to create cpufreq-dt device
For omap2/4/5 there is cpufreq-dt-plat to create cpufreq-dt device.
For omap1 this driver cannot be selected at all.

So no users, no need to reactivate the driver somehow. So remove it.

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Acked-by: Kevin Hilman <khilman@baylibre.com>
Link: https://patch.msgid.link/20260108-omap-cpufreq-removal-v1-1-8fe42f130f48@kemnade.info
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>