Move driver private data into a separate header file

It is going to be included by multiple different source files.

src/Makefile.am

@@ -30,4 +30,5 @@ sunxifb_drv_ladir = @moduledir@/drivers
 
 sunxifb_drv_la_SOURCES = \
          compat-api.h \
-         fbdev.c
+         fbdev.c \
+         fbdev_priv.h

src/fbdev.c

@@ -177,25 +177,7 @@ FBDevSetup(pointer module, pointer opts, int *errmaj, int *errmin)
 /* -------------------------------------------------------------------- */
 /* our private data, and two functions to allocate/free this            */
 
-typedef struct {
-	unsigned char*			fbstart;
-	unsigned char*			fbmem;
-	int				fboff;
-	int				lineLength;
-	int				rotate;
-	Bool				shadowFB;
-	void				*shadow;
-	CloseScreenProcPtr		CloseScreen;
-	CreateScreenResourcesProcPtr	CreateScreenResources;
-	void				(*PointerMoved)(SCRN_ARG_TYPE arg, int x, int y);
-	EntityInfoPtr			pEnt;
-	/* DGA info */
-	DGAModePtr			pDGAMode;
-	int				nDGAMode;
-	OptionInfoPtr			Options;
-} FBDevRec, *FBDevPtr;
-
-#define FBDEVPTR(p) ((FBDevPtr)((p)->driverPrivate))
+#include "fbdev_priv.h"
 
 static Bool
 FBDevGetRec(ScrnInfoPtr pScrn)

src/fbdev_priv.h

+/*
+ * Authors:  Alan Hourihane, <alanh@fairlite.demon.co.uk>
+ *	     Michel Dänzer, <michel@tungstengraphics.com>
+ */
+
+#include "compat-api.h"
+
+typedef struct {
+	unsigned char*			fbstart;
+	unsigned char*			fbmem;
+	int				fboff;
+	int				lineLength;
+	int				rotate;
+	Bool				shadowFB;
+	void				*shadow;
+	CloseScreenProcPtr		CloseScreen;
+	CreateScreenResourcesProcPtr	CreateScreenResources;
+	void				(*PointerMoved)(SCRN_ARG_TYPE arg, int x, int y);
+	EntityInfoPtr			pEnt;
+	/* DGA info */
+	DGAModePtr			pDGAMode;
+	int				nDGAMode;
+	OptionInfoPtr			Options;
+} FBDevRec, *FBDevPtr;
+
+#define FBDEVPTR(p) ((FBDevPtr)((p)->driverPrivate))