fvp: Remove unnecessary initializers

Global and static variables are expected to be initialised to zero
by default.  This is specified by the C99 standard. This patch
removes some unnecessary initialisations of such variables.

It fixes a compilation warning at the same time:
  plat/fvp/bl31_plat_setup.c:82:3: warning: missing braces around
  initializer [-Wmissing-braces]
     section("tzfw_coherent_mem"))) = {0};
     ^
  plat/fvp/bl31_plat_setup.c:82:3: warning: (near initialization for
  ‘ns_entry_info[0]’) [-Wmissing-braces]

Note that GCC should not have emitted this warning message in the
first place.  The C Standard permits braces to be elided around
subaggregate initializers.  See this GCC bug report:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53119

Change-Id: I13cb0c344feb9803bca8819f976377741fa6bc35
diff --git a/plat/fvp/bl1_plat_setup.c b/plat/fvp/bl1_plat_setup.c
index 7fa3f76..434dfb7 100644
--- a/plat/fvp/bl1_plat_setup.c
+++ b/plat/fvp/bl1_plat_setup.c
@@ -83,7 +83,7 @@
 
 
 /* Data structure which holds the extents of the trusted SRAM for BL1*/
-static meminfo bl1_tzram_layout = {0};
+static meminfo bl1_tzram_layout;
 
 meminfo bl1_get_sec_mem_layout(void)
 {