global_data: enable fb_base for DM_VIDEO

with CONFIG_VIDEO we store fb base address
in global data fb_base variable. Do this
also in DM_VIDEO case.

Signed-off-by: Heiko Schocher <hs@denx.de>
diff --git a/include/asm-generic/global_data.h b/include/asm-generic/global_data.h
index 7c22206..5372d5d 100644
--- a/include/asm-generic/global_data.h
+++ b/include/asm-generic/global_data.h
@@ -33,7 +33,7 @@
 	/* We cannot bracket this with CONFIG_PCI due to mpc5xxx */
 	unsigned long pci_clk;
 	unsigned long mem_clk;
-#if defined(CONFIG_LCD) || defined(CONFIG_VIDEO)
+#if defined(CONFIG_LCD) || defined(CONFIG_VIDEO) || defined(CONFIG_DM_VIDEO)
 	unsigned long fb_base;		/* Base address of framebuffer mem */
 #endif
 #if defined(CONFIG_POST)