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/assert.c b/lib/libc/assert.c
index 97fab4b..721b6e5 100644
--- a/lib/libc/assert.c
+++ b/lib/libc/assert.c
@@ -10,9 +10,9 @@
 #include <platform.h>
 
 /*
-* Only print the output if PLAT_LOG_LEVEL_ASSERT is higher or equal to
-* LOG_LEVEL_INFO, which is the default value for builds with DEBUG=1.
-*/
+ * Only print the output if PLAT_LOG_LEVEL_ASSERT is higher or equal to
+ * LOG_LEVEL_INFO, which is the default value for builds with DEBUG=1.
+ */
 
 #if PLAT_LOG_LEVEL_ASSERT >= LOG_LEVEL_VERBOSE
 void __assert(const char *file, unsigned int line, const char *assertion)