fconf: Move platform io policies into fconf

Use the firmware configuration framework to store the io_policies
information inside the configuration device tree instead of the static
structure in the code base.

The io_policies required by BL1 can't be inside the dtb, as this one is
loaded by BL1, and only available at BL2.

This change currently only applies to FVP platform.

Change-Id: Ic9c1ac3931a4a136aa36f7f58f66d3764c1bfca1
Signed-off-by: Louis Mayencourt <louis.mayencourt@arm.com>
diff --git a/Makefile b/Makefile
index 5167d2e..42921ed 100644
--- a/Makefile
+++ b/Makefile
@@ -777,6 +777,7 @@
 $(eval $(call assert_boolean,TRUSTED_BOARD_BOOT))
 $(eval $(call assert_boolean,USE_COHERENT_MEM))
 $(eval $(call assert_boolean,USE_DEBUGFS))
+$(eval $(call assert_boolean,USE_FCONF_BASED_IO))
 $(eval $(call assert_boolean,USE_ROMLIB))
 $(eval $(call assert_boolean,USE_TBBR_DEFS))
 $(eval $(call assert_boolean,WARMBOOT_ENABLE_DCACHE_EARLY))
@@ -845,6 +846,7 @@
 $(eval $(call add_define,TRUSTED_BOARD_BOOT))
 $(eval $(call add_define,USE_COHERENT_MEM))
 $(eval $(call add_define,USE_DEBUGFS))
+$(eval $(call add_define,USE_FCONF_BASED_IO))
 $(eval $(call add_define,USE_ROMLIB))
 $(eval $(call add_define,USE_TBBR_DEFS))
 $(eval $(call add_define,WARMBOOT_ENABLE_DCACHE_EARLY))