CVE-2026-90126 rtc: pcf8563: fix clock provider leak on unbind

In the Linux kernel, the following vulnerability has been resolved: rtc: pcf8563: fix clock provider leak on unbind pcf8563clkoutregisterclk registers the CLKOUT clock provider with ofclkaddprovider, but nothing ever unwinds it: there is no ofclkdelprovider call and the driver has no remove...