fsl: refactor MPC8610 and MPC5121 DIU code to use existing bitmap and logo features

The Freescale MPC8610 and MPC5121 DIU code had re-implement two features that already
existed in U-Boot: bitmap drawing and top-of-screen logo (CONFIG_VIDEO_LOGO).
So delete the 8610-specific code and use the built-in features instead.

Signed-off-by: Timur Tabi <timur@freescale.com>
diff --git a/board/freescale/common/Makefile b/board/freescale/common/Makefile
index f93045f..dca3ac0 100644
--- a/board/freescale/common/Makefile
+++ b/board/freescale/common/Makefile
@@ -31,7 +31,7 @@
 
 COBJS-$(CONFIG_FSL_CADMUS)	+= cadmus.o
 COBJS-$(CONFIG_FSL_VIA)		+= cds_via.o
-COBJS-$(CONFIG_FSL_DIU_FB)	+= fsl_diu_fb.o fsl_logo_bmp.o
+COBJS-$(CONFIG_FSL_DIU_FB)	+= fsl_diu_fb.o
 COBJS-$(CONFIG_FSL_PIXIS)	+= pixis.o
 COBJS-$(CONFIG_FSL_NGPIXIS)	+= ngpixis.o
 COBJS-$(CONFIG_PQ_MDS_PIB)	+= pq-mds-pib.o