nvfx: Clean up header file inclusion in nvfx_screen.h.

Remove nvfx_context.h.
Include p_compiler.h for INLINE symbol.

Fixes nvfx_context.h -> nvfx_screen.h -> nvfx_context.h include recursion.

src/gallium/drivers/nvfx/nvfx_screen.h

@@ -1,11 +1,11 @@
 #ifndef __NVFX_SCREEN_H__
 #define __NVFX_SCREEN_H__
 
+#include "pipe/p_compiler.h"
 #include "util/u_double_list.h"
 #include "nouveau/nouveau_screen.h"
-#include "nvfx_context.h"
 
-struct nv04_2d_context;
+struct pipe_screen;
 
 struct nvfx_screen {
 	struct nouveau_screen base;