fsl/diu: ch7301 encoder split off from t1040qds/diu.c

The ch7301 encoder not only used in t1040qds platform, so we split
it for t1042rdb and LSx platform.

Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/board/freescale/common/Makefile b/board/freescale/common/Makefile
index 22b57cc..50d7731 100644
--- a/board/freescale/common/Makefile
+++ b/board/freescale/common/Makefile
@@ -34,6 +34,8 @@
 obj-$(CONFIG_FSL_FIXED_MMC_LOCATION)	+= sdhc_boot.o
 endif
 
+obj-$(CONFIG_FSL_DIU_CH7301)	+= diu_ch7301.o
+
 obj-$(CONFIG_MPC8541CDS)	+= cds_pci_ft.o
 obj-$(CONFIG_MPC8548CDS)	+= cds_pci_ft.o
 obj-$(CONFIG_MPC8555CDS)	+= cds_pci_ft.o