REDHAT-BUG-2348578: Buffer Overflow

In the Linux kernel, the following vulnerability has been resolved:

OPP: add index check to assert to avoid buffer overflow in readfreq()

Pass the freq index to the assert function to make sure we do not read a freq out of the opp->rates[] table when called from the indexed variants: devpmoppfindfreqexactindexed() or devpmoppfindfreqceil/floorindexed().

Add a secondary parameter to the assert function, unused for assertsingleclk() then add assertclkindex() which will check for the clock index when called from the indexed() find functions.