Fix ROM size on lpc800
Fix ROM size on lpc800

Update the lpc800 to have 16KB rom since this is the amount supported.

wjzhang/pyOCD,pyocd/pyOCD,pyocd/pyOCD,mesheven/pyOCD,matthewelse/pyOCD,mbedmicro/pyOCD,mbedmicro/pyOCD,mbedmicro/pyOCD,0xc0170/pyOCD,0xc0170/pyOCD,mesheven/pyOCD,wjzhang/pyOCD,0xc0170/pyOCD,flit/pyOCD,matthewelse/pyOCD,flit/pyOCD,wjzhang/pyOCD,mesheven/pyOCD,matthewelse/pyOCD