Changed LED mapping to RGB

Changed the pin mapping for LED1, LED2, and LED3, to Red, Green, and Blue respectively. This matches the KL25Z, and makes more sense in my opinion.
[NUCLEO_F072RB] Add platform in python files
Merge pull request #319 from dbestm/master

[NUCLEO_L053R8] enhance I2C master (stop) and add I2C slave
[LPC11CXX] can_frequency - bug fix

	- link on the mbed issue report: https://mbed.org/users/mbed_official/code/mbed-src/issues/2
Merge pull request #317 from neilt6/master

[LPC11U6X] PinName LED mapping to RGB
[NUCLEO_F072RB] Add uvision exporter template files

+ correct compiler option on L053R8
Merge pull request #320 from bcostm/master

[NUCLEO_F072RB] Add platform in python files + uvision exporters
These changes solve:
   1) Endianess of TX_DESC_UPDATED_MASK so Tx buffers can be released after tranmission.
   2) Avoid assert( ) failure due uninitialized variable in enet_hal)config_tx_fifo( ) function.

Signed-off-by: Sergio Scaglia <sergio.scaglia@arm.com>
Merge branch 'master' of https://github.com/mbedmicro/mbed