On Solaris, #include <sys/mkdev.h> in xf86drm.c

Needed on Solaris for the definitions of major() & minor() used in
drmGetNodeTypeFromFd() and makedev() used in drmOpenMinor()

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>

configure.ac

@@ -42,6 +42,8 @@ AC_USE_SYSTEM_EXTENSIONS
 AC_SYS_LARGEFILE
 AC_FUNC_ALLOCA
 
+AC_CHECK_HEADERS([sys/mkdev.h])
+
 # Initialize libtool
 LT_PREREQ([2.2])
 LT_INIT([disable-static])

xf86drm.c

@@ -52,6 +52,9 @@
 #include <sys/ioctl.h>
 #include <sys/time.h>
 #include <stdarg.h>
+#ifdef HAVE_SYS_MKDEV_H
+# include <sys/mkdev.h> /* defines major(), minor(), and makedev() on Solaris */
+#endif
 
 /* Not all systems have MAP_FAILED defined */
 #ifndef MAP_FAILED