Renamed mx2.{c,h} to mxc.{c,h} and added copyright notice

Change-Id: I07a280acdce58b8af4a145cd6beafccbb59f20d7
Signed-off-by: Erik Ahlén <erik.ahlen@avalonenterprise.com>
Reviewed-on: http://openocd.zylin.com/272
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

src/flash/nand/Makefile.am

@@ -17,7 +17,7 @@ NAND_DRIVERS = \
 	davinci.c \
 	lpc3180.c \
 	lpc32xx.c \
-	mx2.c \
+	mxc.c \
 	mx3.c \
 	orion.c \
 	s3c24xx.c \
@@ -37,7 +37,7 @@ noinst_HEADERS = \
 	imp.h \
 	lpc3180.h \
 	lpc32xx.h \
-	mx2.h \
+	mxc.h \
 	mx3.h \
 	s3c24xx.h \
 	s3c24xx_regs.h \