NET: emoved all includes of uip.h; added includes of ip.h wherever needed.  Tried to fix problems of the now missing sneak inclusions because uip.h was removed.  There are probably a few of these that were missed.

AMA5 OHCI: Pointers to allocated port values were not being nullified after being deallocated.  This caused some assertions when debug was enabled

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

SAM3/4: Important bugfix.  Values read from PIO input pins do not change unless clocking to the PIO block is enabled

SAMA5D3/4: Fix some logic in conversion of physical and virtal DRAM addresses when running out of DRAM

 Unconfigure GPIO pins when closing a serial port to prevent back effects from back-powering on the TX pin. From Kosma Moczek