[msm]: Enable display driver by default for splash screen on 7627 & 8650

If rgb565 image is available in splash partition then display it
as splash screen.

On Linux, splash.img can be created as follows:
convert -depth 8 splash.png rgb:- | out/host/linux-x86/bin/rgb2565  > splash.img

Change-Id: I24b61cbc94af4bac14b9a49b030b59484a0b283e
diff --git a/target/qsd8250_surf/init.c b/target/qsd8250_surf/init.c
index 0b3b0cd..dcddadb 100644
--- a/target/qsd8250_surf/init.c
+++ b/target/qsd8250_surf/init.c
@@ -76,6 +76,11 @@
 	},
 	{
 		.start = DIFF_START_ADDR,
+		.length = 8 /* 1MB */,
+		.name = "splash",
+	},
+	{
+		.start = DIFF_START_ADDR,
 		.length = 40 /* 5MB */,
 		.name = "recovery",
 	},