[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/project/qsd8250_ffa.mk b/project/qsd8250_ffa.mk
index 358128d..fbc932c 100644
--- a/project/qsd8250_ffa.mk
+++ b/project/qsd8250_ffa.mk
@@ -8,4 +8,4 @@
 
 #DEFINES += WITH_DEBUG_DCC=1
 #DEFINES += WITH_DEBUG_UART=1
-#DEFINES += WITH_DEBUG_FBCON=1
+DEFINES += WITH_DEBUG_FBCON=1