Change comments in assembler files to help ctags

Ctags seem to have a problem with generating tags for assembler symbols
when a comment immediately follows an assembly label.

This patch inserts a single space character between the label
definition and the following comments to help ctags.

The patch is generated by the command:

  git ls-files -- \*.S | xargs sed -i 's/^\([^:]\+\):;/\1: ;/1'

Change-Id: If7a3c9d0f51207ea033cc8b8e1b34acaa0926475
diff --git a/arch/aarch64/cpu/cpu_helpers.S b/arch/aarch64/cpu/cpu_helpers.S
index 3ee5917..009f08a 100644
--- a/arch/aarch64/cpu/cpu_helpers.S
+++ b/arch/aarch64/cpu/cpu_helpers.S
@@ -35,7 +35,7 @@
 
 	.section	.text, "ax"; .align 3
 
-cpu_reset_handler:; .type cpu_reset_handler, %function
+cpu_reset_handler: ; .type cpu_reset_handler, %function
 	mov	x19, x30 // lr
 
 	/* ---------------------------------------------