11.1/fix-i82586-warning.diff

Fix gcc(1) warning "suggest parentheses around operand of '!' or change '|' to '||' or '!' to '~'".

diff -ru --exclude-from freebsd-src-diff-exclude-names /usr/src/sys/dev/ic/i82586.h freebsd-11.1/sys/dev/ic/i82586.h
--- /usr/src/sys/dev/ic/i82586.h	2017-07-21 07:41:52.000000000 +0800
+++ freebsd-11.1/sys/dev/ic/i82586.h	2020-01-25 22:19:13.514758000 +0800
@@ -303,7 +303,7 @@
 	cmd->ie_ifs = 0x60;
 	cmd->ie_slot_low = 0;
 	cmd->ie_slot_high = 0xf2;
-	cmd->ie_promisc = !!promiscuous | manchester << 2;
+	cmd->ie_promisc = (!!promiscuous) | (manchester << 2);
 	cmd->ie_crs_cdt = 0;
 	cmd->ie_min_len = 64;
 	cmd->ie_junk = 0xff;