xen: event channel arrays are xen_ulong_t and not unsigned long

xen: event channel arrays are xen_ulong_t and not unsigned long

On ARM we want these to be the same size on 32- and 64-bit.

This is an ABI change on ARM. X86 does not change.

Signed-off-by: Ian Campbell <[email protected]>
Cc: Jan Beulich <[email protected]>
Cc: Keir (Xen.org) <[email protected]>
Cc: Tim Deegan <[email protected]>
Cc: Stefano Stabellini <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: Konrad Rzeszutek Wilk <[email protected]>
Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>