Fix for a bug that would show up if CONFIG_MTD_BYTE_WRITE was not selected and the SMART sector size was larger than the mtd device's block size (like it would be if using SMARTFS on larger flash devices).  From Ken Pettit

SAMA5 OHCI: Fix an error in a DEBUGASSERT statement.  Caused assertion to fire inappropriately when a low- or full-speed device is removed and CONFIG_DEBUG=y

SAMA5D3/4: UPLL divisor to generate 48MHz for OHCI is different from the two families.  No idea why.

CCM PROCFS: Changed the configuration a bit.  I am still not happy about the coupling between procfs, mtd, and now STM32

SAM3/4 and SAMA5 Ethernet:  Fix an error in the function that determines the number of free TX descriptors

SAMA54D-EK:  Don't disable any features in the NSH configuration.  Comments updated in several files