[docs] Add CoglTextureFlags to the API reference
[docs] Add CoglTextureFlags to the API reference

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