Replace S-EL3 references by EL3

The "Secure" prefix (S-ELx) is valid only for S-EL0 and S-EL1 but is
meaningless for EL3, since EL3 is always secure. Hence, the "S" prefix
has been removed from wherever it was used as "S-EL3".

Change-Id: Icdeac9506d763f9f83d7297c7113aec7b85e9dbe
Signed-off-by: John Tsichritzis <john.tsichritzis@arm.com>
diff --git a/plat/marvell/common/marvell_bl31_setup.c b/plat/marvell/common/marvell_bl31_setup.c
index 0bbb940..da91b56 100644
--- a/plat/marvell/common/marvell_bl31_setup.c
+++ b/plat/marvell/common/marvell_bl31_setup.c
@@ -62,7 +62,7 @@
 /*****************************************************************************
  * Perform any BL31 early platform setup common to ARM standard platforms.
  * Here is an opportunity to copy parameters passed by the calling EL (S-EL1
- * in BL2 & S-EL3 in BL1) before they are lost (potentially). This needs to be
+ * in BL2 & EL3 in BL1) before they are lost (potentially). This needs to be
  * done before the MMU is initialized so that the memory layout can be used
  * while creating page tables. BL2 has flushed this information to memory, so
  * we are guaranteed to pick up good data.