fbdev/sisfb: Unexport symbols

Fix the compile-time warning

drivers/video/fbdev/sis/sis_main.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing

The affected symbols are not used outside of their module. Some of
the symbols are not used anywhere, so remove the functions entirely.
Also remove the related, but unused, define SISFB_HAVE_MALLOC_NEW.

v2:
- remove unused functions (Helge)

Signed-off-by: Thomas Zimmermann <[e-mail]>
Reviewed-by: Helge Deller <[e-mail]>
Fixes: a934a57a42f6 ("scripts/misc-check: check missing #include <linux/export.h> when W=1")
Cc: Masahiro Yamada <[e-mail]>
Cc: Nathan Chancellor <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/video/fbdev/sis/sis.h

···
 
 /* SiS-specific exported functions */
 void			sis_malloc(struct sis_memreq *req);
-void			sis_malloc_new(struct pci_dev *pdev, struct sis_memreq *req);
 void			sis_free(u32 base);
-void			sis_free_new(struct pci_dev *pdev, u32 base);
 
 /* Routines from init.c/init301.c */
 extern unsigned short	SiS_GetModeID_LCD(int VGAEngine, unsigned int VBFlags, int HDisplay,

drivers/video/fbdev/sis/sis_main.c

···
 		req->offset = req->size = 0;
 }
 
-void
-sis_malloc_new(struct pci_dev *pdev, struct sis_memreq *req)
-{
-	struct sis_video_info *ivideo = pci_get_drvdata(pdev);
-
-	sis_int_malloc(ivideo, req);
-}
-
 /* sis_free: u32 because "base" is offset inside video ram, can never be >4GB */
 
 static void
···
 sis_free(u32 base)
 {
 	struct sis_video_info *ivideo = sisfb_heap->vinfo;
-
-	sis_int_free(ivideo, base);
-}
-
-void
-sis_free_new(struct pci_dev *pdev, u32 base)
-{
-	struct sis_video_info *ivideo = pci_get_drvdata(pdev);
 
 	sis_int_free(ivideo, base);
 }
···
 #endif
 
 #endif 	   /*  /MODULE  */
-
-/* _GPL only for new symbols. */
-EXPORT_SYMBOL(sis_malloc);
-EXPORT_SYMBOL(sis_free);
-EXPORT_SYMBOL_GPL(sis_malloc_new);
-EXPORT_SYMBOL_GPL(sis_free_new);
-
-
-

include/video/sisfb.h

···
 #define	SIS_300_VGA  1
 #define	SIS_315_VGA  2
 
-#define SISFB_HAVE_MALLOC_NEW
-extern void sis_malloc(struct sis_memreq *req);
-extern void sis_malloc_new(struct pci_dev *pdev, struct sis_memreq *req);
-
-extern void sis_free(u32 base);
-extern void sis_free_new(struct pci_dev *pdev, u32 base);
 #endif