Rename 'smcc' to 'smccc'

When the source code says 'SMCC' it is talking about the SMC Calling
Convention. The correct acronym is SMCCC. This affects a few definitions
and file names.

Some files have been renamed (smcc.h, smcc_helpers.h and smcc_macros.S)
but the old files have been kept for compatibility, they include the
new ones with an ERROR_DEPRECATED guard.

Change-Id: I78f94052a502436fdd97ca32c0fe86bd58173f2f
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/lib/psci/psci_main.c b/lib/psci/psci_main.c
index 88cf5cb..d25d177 100644
--- a/lib/psci/psci_main.c
+++ b/lib/psci/psci_main.c
@@ -12,7 +12,7 @@
 #include <platform.h>
 #include <pmf.h>
 #include <runtime_instr.h>
-#include <smcc.h>
+#include <smccc.h>
 #include <string.h>
 #include "psci_private.h"