This is what I play on bass when my friend plays this song on acoustic guitar.

Standard tuning


Riff 1 = Verse 1&2/Chorus
G:--------------------------------------------------------------------------------|
D:--------------------------------------------------------------------------------|
A:--------------7-7-7-7-7-----------5-5-5-5-5-----------------5-5-5-5-5-5-5-5-5-5-|
E:---5-5-5-5-5------------2-2-2-2-2-----------5-5-5-5-5--5--4---------------------|

Riff 2 = Verse 3 (Walking to the south...)

G:----------------------------------------------------|
D:----------------------------------------------------|
A:------7---------5---------------5-5-5-5-5-5-5-5-5-5-|
E:-5---------2---------5----5---4---------------------|

Repeat Riff 1

Thats it, just listen to the tempo and you'll have it down in no time, easy song.