tools/squashfs: include sysmacros.h explicitly

glibc is moving to remove the include of sys/sysmacros.h from
sys/types.h, and some distros have done this early. Other libcs may
already lack this include. Include sysmacros.h explicitly.

Fixes: FS#1018

Signed-off-by: Alex Maclean <monkeh@monkeh.net>

tools/squashfs/patches/130-include_sysmacros.patch

@@ -0,0 +1,20 @@
+--- a/squashfs-tools/mksquashfs.c
++++ b/squashfs-tools/mksquashfs.c
+@@ -30,6 +30,7 @@
+ #include <unistd.h>
+ #include <stdio.h>
+ #include <sys/types.h>
++#include <sys/sysmacros.h>
+ #include <sys/stat.h>
+ #include <fcntl.h>
+ #include <errno.h>
+--- a/squashfs-tools/unsquashfs.c
++++ b/squashfs-tools/unsquashfs.c
+@@ -25,6 +25,7 @@
+ #define FALSE 0
+ #include <stdio.h>
+ #include <sys/types.h>
++#include <sys/sysmacros.h>
+ #include <sys/stat.h>
+ #include <fcntl.h>
+ #include <errno.h>