hardware: Add NanoBeam M5-16 0xe815 device config

{{{
board.sysid=0xe815
board.cpurevision=0x00001122
board.name=NanoBeam M5
board.shortname=N5B
board.subtype=16
board.netmodes=7
board.hwaddr=44D9E7DCC91B
board.reboot=40
board.upgrade=150
board.phycount=1
board.phy.1.maxmtu=2024
board.phy.2.maxmtu=2024
radio.1.name=
radio.1.shortname=
radio.1.bus=ahb
radio.1.subsystemid=0xe815
radio.1.subvendorid=0x0777
radio.1.txpower.max=26
radio.1.txpower.min=-4
radio.1.txpower.offset=4
radio.1.antennas=1
radio.1.def_antenna=4
radio.1.antenna.1.id=4
radio.1.antenna.1.name=Combined
radio.1.antenna.1.gain=16
}}}
ref AREDN->ticket:197

Change-Id: I227accf342ef02395297d2b2f6e37c5aff6f4053

files/www/cgi-bin/perlfunc.pm

@@ -1366,6 +1366,15 @@ sub hardware_info
             'usechains'       => 1,
             'rfband'          => '5800ubntus',
          },
+         '0xe815' => {
+            'name'            => 'NanoBeam M5 16',
+            'comment'         => 'NanoBeam M5 16',
+            'supported'       => '-1',
+            'maxpower'        => '22',
+            'pwroffset'       => '4',
+            'usechains'       => 1,
+            'rfband'          => '5800ubntus',
+         },
     );
 
     $boardid = hardware_boardid();