debugfs: add FIP device

Add a FIP driver hooked to debugfs 9p interface. This is an
abstraction of the FIP filesystem layer on top of a mass storage,
or memory block driver.

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: If275ea0824763de43ab666dab2a06de5352ff940
diff --git a/lib/debugfs/blobs.h b/lib/debugfs/blobs.h
index 4aa3481..54ca9f7 100644
--- a/lib/debugfs/blobs.h
+++ b/lib/debugfs/blobs.h
@@ -7,5 +7,6 @@
 #include "dev.h"
 
 static const dirtab_t blobtab[] = {
-	{"ctl", DEV_ROOT_QBLOBCTL, 0, O_READ}
+	{"ctl", DEV_ROOT_QBLOBCTL, 0, O_READ},
+	{"fip.bin", DEV_ROOT_QBLOBCTL + 1, 0x100000, O_READ, (void *)0x8000000}
 };