i2c: mxc: move to new subsystem

Signed-off-by: Philippe Reynes <tremyfr@yahoo.fr>
diff --git a/arch/arm/imx-common/Makefile b/arch/arm/imx-common/Makefile
index 727a052..6c78dd9 100644
--- a/arch/arm/imx-common/Makefile
+++ b/arch/arm/imx-common/Makefile
@@ -16,7 +16,7 @@
 endif
 ifeq ($(SOC),$(filter $(SOC),mx5 mx6))
 COBJS-y	+= timer.o cpu.o speed.o
-COBJS-$(CONFIG_I2C_MXC) += i2c-mxv7.o
+COBJS-$(CONFIG_SYS_I2C_MXC) += i2c-mxv7.o
 endif
 ifeq ($(SOC),$(filter $(SOC),mx6 mxs))
 COBJS-y	+= misc.o