man: Option "Path" is supported in the code, add it to man page.

man/evdev.man

@@ -9,6 +9,7 @@ evdev \- Generic Linux input driver
 .BI "  Identifier \*q" devname \*q
 .B  "  Driver \*qevdev\*q"
 .BI "  Option \*qDevice\*q   \*q" devpath \*q
+.BI "  Option \*qPath\*q     \*q" path \*q
 \ \ ...
 .B EndSection
 .fi
@@ -45,7 +46,14 @@ are supported:
 Specifies the device through which the device can be accessed.  This will 
 generally be of the form \*q/dev/input/eventX\*q, where X is some integer.
 The mapping from device node to hardware is system-dependent.  This option is
-mandatory, and there is no default setting.
+mandatory unless \*qPath\*q is given, and there is no default setting.
+.TP 7
+.BI "Option \*qPath\*q \*q" string \*q
+Specifies the device through which the device can be accessed.  This will
+generally be of the form \*q/dev/input/by-path/xyz\*q, where xyz includes the
+name of the device. The mapping from device node to hardware is
+system-dependent. This option has precedence over the \*qDevice\*q option but
+one of \*qPath\*q or \*qDevice\*q must be given.
 .SH AUTHORS
 Kristian Høgsberg.
 .SH "SEE ALSO"