debugfs: add SMC channel

Provide an SMC interface to the 9p filesystem. This permits
accessing firmware drivers through a common interface, using
standardized read/write/control operations.

Signed-off-by: Ambroise Vincent <ambroise.vincent@arm.com>
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: I9314662314bb060f6bc02714476574da158b2a7d
diff --git a/plat/arm/board/fvp/fvp_common.c b/plat/arm/board/fvp/fvp_common.c
index a948796..5c0df7a 100644
--- a/plat/arm/board/fvp/fvp_common.c
+++ b/plat/arm/board/fvp/fvp_common.c
@@ -122,6 +122,10 @@
 #ifdef IMAGE_BL31
 const mmap_region_t plat_arm_mmap[] = {
 	ARM_MAP_SHARED_RAM,
+#if USE_DEBUGFS
+	/* Required by devfip, can be removed if devfip is not used */
+	V2M_MAP_FLASH0_RW,
+#endif /* USE_DEBUGFS */
 	ARM_MAP_EL3_TZC_DRAM,
 	V2M_MAP_IOFPGA,
 	MAP_DEVICE0,