Switch detection for MS220-24/48 broken

[halmartin]

Meraki left the switch model of both the MS220-24 and MS220-48 as meraki_elemental in the board-config MTD.

Therefore, the board detection in S08kmods is wrong.

The check should be changed to something like this:

    elif [ $(echo $model | grep -c MS220-24) -eq 1 ]; || ( [ $(echo $model | grep -c meraki_elemental) -eq 1 ] && [ $(cat /proc/cpuinfo | grep -c VSC7427) -eq 1] ) then
        mod_dir=luton26
        switch_board=MERAKI_BOARD_MS220_24
        echo 24 > /tmp/NUM_PORTS
    elif [ $(echo $model | grep -c MS220-48) -eq 1 ] || ( [ $(echo $model | grep -c meraki_elemental) -eq 1 ] && [ $(cat /proc/cpuinfo | grep -c VSC7434) -eq 1] ); then
        mod_dir=jaguar_dual
        switch_board=MERAKI_BOARD_MS220_48
        echo 52 > /tmp/NUM_PORTS

Alternatively, just handle the case of meraki_elemental here.