[LPC1549] initial commit
[LPC1549] Fixed GPIO

Clean-up PinNames.h and GPIOrelated functions.
[LPC1549] put PINASSIGN0-15 to PINASSIGN[] on LPC15xx.h

and fixed typo on system_LPC15xx.c
[LPC1549] Added UART support
[LPC1549] Added SPI support
[LPC1549] Fixed us_ticker problem
[LPC1549] Added Arduino Shield Receptacles Names
[LPC1549] Corrected wrong pin name
[LPC1549] Added AnalogIn support
[LPC1549] Added I2C master support
[LPC1549] Added InterruptIn support
[LPC1549] Added export support
Merge branch 'master' of https://github.com/mbedmicro/mbed_private_nxp
Properly round non integer bus-frequencies in MHz

PIT prescaler now rounds to nearest instead of down. Since when FLL is
used (default on KL05Z, but also possible on others), the bus
frequencies is 23.986MHz, rounding down is bad.
Merge pull request #174 from Sissors/master

Properly round non integer bus-frequencies in MHz
Update peripheral pin mapping and pin names
Added some PinNames for Arduino compatibility and cleaned up white spaces
Tabs to spaces...
Merge pull request #175 from sg-/FRDM-fix

Frdm fix
CMSIS system for KL05Z update

	- clocking from external 32kHz is set by default