EFM32 SPI: setfrequency() needs to return actual frequency; simplify nbits usages by removing conditional logic
Cosmetic changes
Add include/wchar.h
Update ChangeLog
Cosmetic... removed checks for non-existent configuration setting
Rename CONFIG_STM32_HAVE_USARTn to CONFIG_STM32_HAVE_UARTn for n-4,5,7,8
Move selection for CONFIG_SERIAL_TERMIOS out of MCU Kconfigs to common drivers/serial/Kconfig.  Add CONFIG_ARCH_HAVE_SERIAL_TERMIOS to indicate if an MCU supports TERMIOS
Add isatty() function. From  Alan Carvalho de Assis
Update ChangeLog
Refresh configuration
:Merge branch 'master' of http://git.code.sf.net/p/nuttx/git
Merge branch 'master' into cryptoapi