Move lpc43xx and lpc43xx_m0 code to lpc43xx/ hierarchy

Previously there were nasty dependency issues causing M4 objects to be
linked into the M0 library

lib/lpc43xx/m0/Makefile

@@ -0,0 +1,42 @@
+##
+## This file is part of the libopencm3 project.
+##
+## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+## Copyright (C) 2012 Michael Ossmann <mike@ossmann.com>
+## Copyright (C) 2012/2013 Benjamin Vernoux <titanmkd@gmail.com>
+##
+## This library is free software: you can redistribute it and/or modify
+## it under the terms of the GNU Lesser General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This library is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU Lesser General Public License for more details.
+##
+## You should have received a copy of the GNU Lesser General Public License
+## along with this library.  If not, see <http://www.gnu.org/licenses/>.
+##
+
+LIBNAME		= libopencm3_lpc43xx_m0
+
+PREFIX		?= arm-none-eabi
+#PREFIX		?= arm-elf
+CC		= $(PREFIX)-gcc
+AR		= $(PREFIX)-ar
+CFLAGS		= -O2 -g3 -Wall -Wextra -I../../../include -fno-common \
+		  -mcpu=cortex-m0 -mthumb -Wstrict-prototypes \
+		  -ffunction-sections -fdata-sections -MD
+# ARFLAGS	= rcsv
+ARFLAGS		= rcs
+
+# LPC43xx common files for M4 / M0
+OBJ_LPC43XX     = gpio.o scu.o i2c.o ssp.o uart.o
+
+#LPC43xx M0 specific file + Generic LPC43xx M4/M0 files
+OBJS		= $(OBJ_LPC43XX)
+
+VPATH += ../:../../cm3
+
+include ../../Makefile.include