imx31: move serial driver to drivers/serial

Signed-off-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

cpu/arm1136/mx31/Makefile

@@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(SOC).a
 
-COBJS	= interrupts.o serial.o generic.o
+COBJS	= interrupts.o generic.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))

drivers/serial/Makefile

@@ -35,6 +35,7 @@ COBJS-$(CONFIG_S3C64XX) += s3c64xx.o
 COBJS-$(CONFIG_SYS_NS16550_SERIAL) += serial.o
 COBJS-$(CONFIG_IXP_SERIAL) += serial_ixp.o
 COBJS-$(CONFIG_MAX3100_SERIAL) += serial_max3100.o
+COBJS-$(CONFIG_MX31_UART) += serial_mx31.o
 COBJS-$(CONFIG_NETARM_SERIAL) += serial_netarm.o
 COBJS-$(CONFIG_PL010_SERIAL) += serial_pl01x.o
 COBJS-$(CONFIG_PL011_SERIAL) += serial_pl01x.o

cpu/arm1136/mx31/serial.c → drivers/serial/serial_mx31.c

@@ -18,9 +18,6 @@
  */
 
 #include <common.h>
-
-#if defined CONFIG_MX31_UART
-
 #include <asm/arch/mx31.h>
 
 #define __REG(x)     (*((volatile u32 *)(x)))
@@ -227,6 +224,3 @@ int serial_init (void)
 
 	return 0;
 }
-
-
-#endif /* CONFIG_MX31 */