lint: checkpatch.pl: fix && complaints

Don't complain with:
	ERROR:SPACING: space prohibited after that '&&' (ctx:ExW)
in code similar to:
	if (conn->conn->mode != MGCP_CONN_LOOPBACK
	    && conn->conn->mode != MGCP_CONN_RECV_ONLY
	    && !mgcp_rtp_end_remote_addr_available(&conn->end)) {

The check was supposed to complain about spaces if the && is used as
unary operator (to get the address of a goto label). But it's clearly
producing false positives in the Osmocom context with use as non-unary
operator, so remove this check.

Related: OS#5087
Related: 0d413866c7
Change-Id: I7ce79e6b291b3a3dab6587a589eeef0a0bc53de9

lint/checkpatch/checkpatch.pl

@@ -5072,7 +5072,7 @@ sub process {
 				# unary operator, or a cast
 				} elsif ($op eq '!' || $op eq '~' ||
 					 $opv eq '*U' || $opv eq '-U' ||
-					 $opv eq '&U' || $opv eq '&&U') {
+					 $opv eq '&U') {  # Osmocom specific: &&U removed
 					if ($ctx !~ /[WEBC]x./ && $ca !~ /(?:\)|!|~|\*|-|\&|\||\+\+|\-\-|\{)$/) {
 						if (ERROR("SPACING",
 							  "space required before that '$op' $at\n" . $hereptr)) {