util-linux: add numbers to patches

As we are going to add an Xtensa related patch that needs to be
applied *after* the AArch64 patch, let's first add a number to each
util-linux patch file name, so that we know they will be applied in
the right order.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>