Store device file's minor/major to avoid duplicate devices.

Devices added that use the same min/maj as an already added device are ignored
by the driver. This way users can have an xorg.conf entry on
/dev/input/by-id/blahblah and not get the same device added by HAL.

Signed-off-by: Peter Hutterer <peter.hutterer@redhat.com>
(cherry picked from commit 63af314368)

src/evdev.h

@@ -31,6 +31,7 @@
 #define EVDEV_H
 
 #include <linux/input.h>
+#include <linux/types.h>
 
 #include <xf86Xinput.h>
 #include <xf86_OSproc.h>
@@ -125,6 +126,9 @@ typedef struct {
     long abs_bitmask[NBITS(ABS_MAX)];
     long led_bitmask[NBITS(LED_MAX)];
     struct input_absinfo absinfo[ABS_MAX];
+
+    /* minor/major number */
+    dev_t min_maj;
 } EvdevRec, *EvdevPtr;
 
 unsigned int EvdevUtilButtonEventToButtonNumber(EvdevPtr pEvdev, int code);