fbdev: nvidiafb: add depends on HAS_IOPORT

The nvidiafb driver uses inb()/outb() without depending on HAS_IOPORT,
which leads to build errors since kernel v6.13-rc1:
commit 6f043e7 ("asm-generic/io.h: Remove I/O port accessors
for HAS_IOPORT=n")

Add the HAS_IOPORT dependency to prevent the build errors.

(Found in ARCH=um allmodconfig builds)

drivers/video/fbdev/nvidia/nv_accel.c: In function ‘NVDmaWait’:
include/asm-generic/io.h:596:15: error: call to ‘_outb’ declared with attribute error: outb() requires CONFIG_HAS_IOPORT
  596 | #define _outb _outb

Signed-off-by: Randy Dunlap <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Niklas Schnelle <[email protected]>
Cc: Antonino Daplas <[email protected]>
Cc: Helge Deller <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected] # v6.13+
Signed-off-by: Helge Deller <[email protected]>

Author: rddunlap

drivers/video/fbdev/Kconfig

@@ -660,7 +660,7 @@ config FB_ATMEL
 
 config FB_NVIDIA
 	tristate "nVidia Framebuffer Support"
-	depends on FB && PCI
+	depends on FB && PCI && HAS_IOPORT
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT