viafb: Eliminate some global.h references

The various subdev drivers (other than the framebuffer itself) no longer
need this file.

Cc: [e-mail]
Cc: [e-mail]
Cc: Harald Welte <[e-mail]>
Acked-by: Florian Tobias Schandinat <[e-mail]>
Signed-off-by: Jonathan Corbet <[e-mail]>

drivers/video/via/via-gpio.c

···
 #include <linux/platform_device.h>
 #include "via-core.h"
 #include "via-gpio.h"
-#include "global.h"
 
 /*
  * The ports we know about.  Note that the port-25 gpios are not

drivers/video/via/via_i2c.c

···
  */
 
 #include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/module.h>
 #include "via-core.h"
 #include "via_i2c.h"
-#include "global.h"
 
 /*
  * There can only be one set of these, so there's no point in having