SPCI is now called PSA FF-A

SPCI is renamed as PSA FF-A which stands for Platform Security
Architecture Firmware Framework for A class processors.
This patch replaces the occurrence of SPCI with PSA FF-A(in documents)
or simply FFA(in code).

Change-Id: I4ab10adb9ffeef1ff784641dfafd99f515133760
Signed-off-by: J-Alves <joao.alves@arm.com>
diff --git a/include/services/spm_core_manifest.h b/include/services/spm_core_manifest.h
index 0c43636..64ecce0 100644
--- a/include/services/spm_core_manifest.h
+++ b/include/services/spm_core_manifest.h
@@ -15,7 +15,7 @@
 
 typedef struct spm_core_manifest_sect_attribute {
 	/*
-	 * SPCI version (mandatory).
+	 * FFA version (mandatory).
 	 */
 	uint32_t major_version;
 	uint32_t minor_version;