staging: omap-thermal: add a section of register manipulation

This is introduces a series of marks inside the code to
better organize functions per group, aggregating their
functionality.
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/omap-thermal/omap-bandgap.c

@@ -42,6 +42,8 @@
 
 #include "omap-bandgap.h"
 
+/***   Helper functions to access registers and their bitfields   ***/
+
 /**
  * omap_bandgap_readl() - simple read helper function
  * @bg_ptr: pointer to omap_bandgap structure