log: l1sap: add 0x to hex output of chan_nr, 5 times
log: l1sap: add 0x to hex output of chan_nr, 5 times

Change-Id: I187a74fd255dbdfb9bfb1e32786031a66f013efb

osmocom/osmo-bts,osmocom/osmo-bts,osmocom/osmo-bts