Modified the TARGET_GHI_MBUINO/PeripheralNames.h and targets/hal/TARGET_...

...NXP/TARGET_LPC11UXX/TARGET_GHI_MBUINO/PinNames.h to reflect the mBuino base hardware;

I commented out the non useful SPI pins and Serial pins from our hardware build;
For pwmout, I removed the non useful pins and added two more pins that are part of our hardware build.

As this is my first time making a platform, I am unsure if the changes I made are proper. Please advise to any errors I may have made.