libc: Cleanup remaining files

The existing files had some style problems that this patch fixes.

Change-Id: I794e0d96e52f8da0ffa0d70a41f36c4432b4e563
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/lib/libc/abort.c b/lib/libc/abort.c
index 65ce4cc..c9d16cc 100644
--- a/lib/libc/abort.c
+++ b/lib/libc/abort.c
@@ -7,10 +7,7 @@
 #include <debug.h>
 #include <stdlib.h>
 
-/*
- * This is a basic implementation. This could be improved.
- */
-void abort (void)
+void abort(void)
 {
 	ERROR("ABORT\n");
 	panic();