Fixes to tickless operation code.  From Brandon Warhurst
Add support for tickless operation using the NXP LPC43xx
More fixes to tickless operation, alarm/mode code.  From Brandon Warhurst
Update to the LPC43xx RIT/Tickless code.  From Brandon Warhurst
Update ChangeLog
EFM32:  Add configuration option to use USARTs as SPI
EFM32:  Add configuration option to use USARTs as SPI
Oops last changes still in editor
Refresh SAM4E configurations
Fixes to keypadtest from Pierre-Noel Bouteville
EFM32 port and pin decoding backward in every case.  From  Pierre-Noel Bouteville
Fix file naming:  arm_item_syslog.c changed to up_itm_syslog.c.  From  Pierre-Noel Bouteville
Fix compiler errors in up_itm_syslog.c.  From  Pierre-Noel Bouteville
Update ChangeLogs
Another typo in EMF32 GPIO logic
Add EFM32 DMA header file
SAM4E: Fix options to select GPIO interrupts in Kconfig
Kconfig: Allow select of standard board properties for custom board
SAM3/4:  Fix conditional compilation in GPIO IRQ logic
Another fix to SAM3/4 GPIO IRQ issue