Use AC_HEADER_MAJOR to find how to include major()

We need to include <sys/mkdev.h> on Solaris.

Reported-by: Richard Palo <richard@netbsd.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89763
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

configure.ac

@@ -417,6 +417,7 @@ AC_ARG_ENABLE(sna,
 	      [SNA=auto])
 
 AC_CHECK_HEADERS([dev/wscons/wsconsio.h alloca.h])
+AC_HEADER_MAJOR
 
 if test "x$SNA" != "xno"; then
 	AC_DEFINE(USE_SNA, 1, [Enable SNA support])

src/backlight.c

@@ -34,6 +34,12 @@
 #include <sys/stat.h>
 #include <sys/ioctl.h>
 
+#if MAJOR_IN_MKDEV
+#include <sys/mkdev.h>
+#elif MAJOR_IN_SYSMACROS
+#include <sys/sysmacros.h>
+#endif
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

src/intel_device.c

@@ -38,6 +38,12 @@
 #include <dirent.h>
 #include <errno.h>
 
+#if MAJOR_IN_MKDEV
+#include <sys/mkdev.h>
+#elif MAJOR_IN_SYSMACROS
+#include <sys/sysmacros.h>
+#endif
+
 #include <pciaccess.h>
 
 #include <xorg-server.h>

tools/backlight_helper.c

@@ -9,6 +9,12 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 
+#if MAJOR_IN_MKDEV
+#include <sys/mkdev.h>
+#elif MAJOR_IN_SYSMACROS
+#include <sys/sysmacros.h>
+#endif
+
 #define DBG 0
 
 #if defined(__GNUC__) && (__GNUC__ > 3)