soft_spi: move to drivers/spi

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/common/Makefile b/common/Makefile
index faeac86..3e4829f 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -137,7 +137,6 @@
 COBJS-y += miiphyutil.o
 COBJS-y += s_record.o
 COBJS-y += serial.o
-COBJS-$(CONFIG_SOFT_SPI) += soft_spi.o
 ifdef CONFIG_CMD_USB
 COBJS-y += usb.o
 COBJS-$(CONFIG_USB_STORAGE) += usb_storage.o
diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index 4f7b679..15e0f7a 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -25,9 +25,10 @@
 
 LIB	:= $(obj)libspi.a
 
-COBJS-$(CONFIG_MPC8XXX_SPI) += mpc8xxx_spi.o
 COBJS-$(CONFIG_ATMEL_SPI) += atmel_spi.o
+COBJS-$(CONFIG_MPC8XXX_SPI) += mpc8xxx_spi.o
 COBJS-$(CONFIG_MXC_SPI) += mxc_spi.o
+COBJS-$(CONFIG_SOFT_SPI) += soft_spi.o
 
 COBJS	:= $(COBJS-y)
 SRCS	:= $(COBJS:.o=.c)
diff --git a/common/soft_spi.c b/drivers/spi/soft_spi.c
similarity index 100%
rename from common/soft_spi.c
rename to drivers/spi/soft_spi.c