Moved i2c driver out of cpu/mpc86xx/i2c.c into drivers/fsl_i2c.c

in an effort to begin to unify the umpteen FSL I2C drivers that
are all otherwise very similar.

Signed-off-by: Jon Loeliger <jdl@freescale.com>
diff --git a/drivers/Makefile b/drivers/Makefile
index 0f84969..b191018 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -50,7 +50,8 @@
 	  videomodes.o w83c553f.o \
 	  ks8695eth.o \
 	  pxa_pcmcia.o mpc8xx_pcmcia.o tqm8xx_pcmcia.o	\
-	  rpx_pcmcia.o
+	  rpx_pcmcia.o \
+	  fsl_i2c.o
 
 SRCS	:= $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))