mesa: move _mesa_num_tex_faces() to teximage.h

So it's near the other cube map helper functions.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>

src/mesa/main/teximage.h

@@ -48,6 +48,25 @@ _mesa_is_cube_face(GLenum target)
 }
 
 
+/**
+ * Return number of faces for a texture target.  This will be 6 for
+ * cube maps and 1 otherwise.
+ * NOTE: this function is not used for cube map arrays which operate
+ * more like 2D arrays than cube maps.
+ */
+static inline GLuint
+_mesa_num_tex_faces(GLenum target)
+{
+   switch (target) {
+   case GL_TEXTURE_CUBE_MAP:
+   case GL_PROXY_TEXTURE_CUBE_MAP:
+      return 6;
+   default:
+      return 1;
+   }
+}
+
+
 /**
  * If the target is GL_TEXTURE_CUBE_MAP, return one of the
  * GL_TEXTURE_CUBE_MAP_POSITIVE/NEGATIVE_X/Y/Z targets corresponding to

src/mesa/main/texobj.h

@@ -120,25 +120,6 @@ _mesa_unlock_texture(struct gl_context *ctx, struct gl_texture_object *texObj)
 }
 
 
-/**
- * Return number of faces for a texture target.  This will be 6 for
- * cube maps (and cube map arrays) and 1 otherwise.
- * NOTE: this function is not used for cube map arrays which operate
- * more like 2D arrays than cube maps.
- */
-static inline GLuint
-_mesa_num_tex_faces(GLenum target)
-{
-   switch (target) {
-   case GL_TEXTURE_CUBE_MAP:
-   case GL_PROXY_TEXTURE_CUBE_MAP:
-      return 6;
-   default:
-      return 1;
-   }
-}
-
-
 /** Is the texture "complete" with respect to the given sampler state? */
 static inline GLboolean
 _mesa_is_texture_complete(const struct gl_texture_object *texObj,