74xx_7xx: CPCI750: Add CPCI adapter/target support

The CPCI750 can be built as CPCI host or adapter/target board. This patch
adds support for runtime detection of those variants.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Reinhard Arlt <reinhard.arlt@esd-electronics.com>
diff --git a/board/esd/cpci750/cpci750.c b/board/esd/cpci750/cpci750.c
index 4ac1ff4..2ae4cbd 100644
--- a/board/esd/cpci750/cpci750.c
+++ b/board/esd/cpci750/cpci750.c
@@ -140,6 +140,15 @@
 unsigned int INTERNAL_REG_BASE_ADDR = CONFIG_SYS_GT_REGS;
 int display_mem_map (void);
 
+/*
+ * Skip video initialization on slave variant.
+ * This function will overwrite the weak default in cfb_console.c
+ */
+int board_video_skip(void)
+{
+	return CPCI750_SLAVE_TEST;
+}
+
 /* ------------------------------------------------------------------------- */
 
 /*