Rename symbols and files relating to CVE-2017-5715

This patch renames symbols and files relating to CVE-2017-5715 to make
it easier to introduce new symbols and files for new CVE mitigations.

Change-Id: I24c23822862ca73648c772885f1690bed043dbc7
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
diff --git a/lib/cpus/aarch64/cpu_helpers.S b/lib/cpus/aarch64/cpu_helpers.S
index 9f13ed2..78c66e6 100644
--- a/lib/cpus/aarch64/cpu_helpers.S
+++ b/lib/cpus/aarch64/cpu_helpers.S
@@ -285,7 +285,7 @@
 #endif
 
 /*
- * int check_workaround_cve_2017_5715(void);
+ * int check_wa_cve_2017_5715(void);
  *
  * This function returns:
  *  - ERRATA_APPLIES when firmware mitigation is required.
@@ -296,8 +296,8 @@
  * NOTE: Must be called only after cpu_ops have been initialized
  *       in per-CPU data.
  */
-	.globl	check_workaround_cve_2017_5715
-func check_workaround_cve_2017_5715
+	.globl	check_wa_cve_2017_5715
+func check_wa_cve_2017_5715
 	mrs	x0, tpidr_el3
 #if ENABLE_ASSERTIONS
 	cmp	x0, #0
@@ -315,4 +315,4 @@
 1:
 	mov	x0, #ERRATA_NOT_APPLIES
 	ret
-endfunc check_workaround_cve_2017_5715
+endfunc check_wa_cve_2017_5715