cogl-buffer-private.h: cleanup up the coding style
cogl-buffer-private.h: cleanup up the coding style

This file was following the Clutter coding style of arranging prototypes
into columns which Cogl doesn't copy.

djdeath/cogl-android,Distrotech/cogl,djdeath/cogl-android,Distrotech/cogl,gcampax/cogl,djdeath/cogl,spatulasnout/cogl,gcampax/cogl,gcampax/cogl,djdeath/cogl,collects/cogl,spatulasnout/cogl,gcampax/cogl,djdeath/cogl-android,Distrotech/cogl,Distrotech/cogl,collects/cogl,djdeath/cogl