Improve comments on errata 2.6.10
Errata 2.6.10 affects Rev A, D, F: The cache lines
of AHB0 and AHB1 might not reset properly on Power up
resulting in courrupted data in rare cases.
The errata recommends fixing this by:
- for AHB0: WDT enable & disable
- for AHB1: disable and re-enable cache line
Change-Id: I3c35f590a4e43d778e70f2f377e0d470c3a652b2
