boot: fdt_simplefb: Remove conditional compilation checks for VIDEO Kconfig

CONFIG_VIDEO conditional compilation checks are no longer needed since
FDT_SIMPLEFB Kconfig now depends on VIDEO Kconfig.

Signed-off-by: Devarsh Thakkar <devarsht@ti.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
diff --git a/boot/fdt_simplefb.c b/boot/fdt_simplefb.c
index 71b833e..5822131 100644
--- a/boot/fdt_simplefb.c
+++ b/boot/fdt_simplefb.c
@@ -103,7 +103,6 @@
 	return fdt_simplefb_configure_node(blob, off);
 }
 
-#if IS_ENABLED(CONFIG_VIDEO)
 int fdt_simplefb_enable_and_mem_rsv(void *blob)
 {
 	int ret;
@@ -118,4 +117,3 @@
 
 	return fdt_add_fb_mem_rsv(blob);
 }
-#endif