revert MSD fix
Merge pull request #252 from wolfmanjm/upstreamedge

revert MSD fix
Merge remote-tracking branch 'upstream/edge' into edge
Modified usb static header
Allow auto detection of MCU and set clock speed accordingly
Merge pull request #253 from wolfmanjm/upstreamedge

Allow auto detection of MCU and set clock speed accordingly
Merge remote-tracking branch 'upstream/edge' into edge

Conflicts:
	mbed/src/vendor/NXP/cmsis/LPC1768/system_LPC17xx.c