Remove all checkpatch errors from codebase

Exclude stdlib files because they do not follow kernel code style.

Fixes ARM-software/tf-issues#73

Change-Id: I4cfafa38ab436f5ab22c277cb38f884346a267ab
diff --git a/plat/common/aarch64/plat_common.c b/plat/common/aarch64/plat_common.c
index 2abf29d..94b9dfd 100644
--- a/plat/common/aarch64/plat_common.c
+++ b/plat/common/aarch64/plat_common.c
@@ -38,12 +38,12 @@
 #pragma weak bl31_plat_enable_mmu
 #pragma weak bl32_plat_enable_mmu
 
-void bl31_plat_enable_mmu()
+void bl31_plat_enable_mmu(void)
 {
 	enable_mmu_el3();
 }
 
-void bl32_plat_enable_mmu()
+void bl32_plat_enable_mmu(void)
 {
 	enable_mmu_el1();
 }