Fix typo cloned to many files: SAM32 vs SAM34
Add basic framework to support the Atmel SAMD Cortex-M+ chip
Add configuration for the SAMD20 Xplained Pro board.  Initial check a low-effor, unverified clone of thoe SAM4L Xplained Pro board configuration
Add initial support for the Atmel SAMD20 Xplained Pro board
Fix-up some SAMD20 SERCOM conditionals
Minimal changes to get a clean compilation of the SAMD20 Xplained configuration. Still a lot of missing logic
Add SAMD20 pin configuration definitions
SAMD20: Add port configuration logic
SAMD20:  Add GCLK and PM register definition header files
SAMD20:  Add SYSCTRL register definition header file
SAMD20: Fixes to SRAM size, No. memory regions, and beginning of clocking logic
STM32 serial: Fix clone typo.. FLOWCONROL vs FLOWCONTROL
SAMD20: Add NVMCTRL register definition header file.  Also empty framework for clock configuration
Typo fixes from CCTSA0.  Thanks
SAM D20: A little more clock configuration logic (still incomplete)
SAM D20: Put fuse related definition in a separate header file so make license statement cleaner
SAM D20: More clock configuration logic (still incomplete)
Back out part of write buffering change.  David G reports that this causes problems connecting to a server
SAMD20: Finishes basic clock configuration logic
SAM D20: Add SERCOM USART register definition header file