(submit/bsd-DEV_MEM) xfree86: os-support: unexport DEV_MEM defines

DEV_MEM define isn't used by any drivers, and BSD seems to be the only
platform using /dev/pmem instead of /dev/mem - as well as the DEV_MEM
define from xf86_OSlib.h (Linux uses the symbol, but defines on its own)

Therefore, just define it where actually used and drop it from the global
xf86OSlib.h file.

Note that /dev/pmem refers to physical memory, not to be mixed up with
Linux's persistent memory subsys, which uses /dev/pmem[N] device nodes.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>

hw/xfree86/os-support/bsd/alpha_video.c

@@ -42,6 +42,8 @@
 #include "xf86_os_support.h"
 #include "xf86_OSlib.h"
 
+#define DEV_MEM "/dev/pmem"
+
 #if defined(__NetBSD__) && !defined(MAP_FILE)
 #define MAP_FLAGS MAP_SHARED
 #else

hw/xfree86/os-support/bsd/arm_video.c

@@ -70,6 +70,8 @@
 #include "xf86_OSlib.h"
 #include "compiler.h"
 
+#define DEV_MEM "/dev/pmem"
+
 #if defined(__NetBSD__) && !defined(MAP_FILE)
 #define MAP_FLAGS MAP_SHARED
 #else

hw/xfree86/os-support/bsd/i386_video.c

@@ -40,6 +40,8 @@
 #include <machine/sysarch.h>
 #endif
 
+#define DEV_MEM "/dev/pmem"
+
 #if defined(__NetBSD__) && !defined(MAP_FILE)
 #define MAP_FLAGS MAP_SHARED
 #else

hw/xfree86/os-support/xf86_OSlib.h

@@ -226,10 +226,6 @@ struct pcvtid {
 
 #include <limits.h>
 
-#ifndef DEV_MEM
-#define DEV_MEM "/dev/mem"
-#endif
-
 #ifndef MAP_FAILED
 #define MAP_FAILED ((void *)-1)
 #endif