beaglebone: correct ocp mapping in support for kernel 4.x

Signed-off-by: deadprogram <[email protected]>

platforms/beaglebone/beaglebone_adaptor.go

@@ -47,13 +47,16 @@ func NewAdaptor() *Adaptor {
 
 func (b *Adaptor) setSlots() {
 	ocp := "/sys/devices/ocp.*"
-	g, _ := glob(ocp)
-	b.ocp = g[0]
-
 	slots := "/sys/devices/bone_capemgr.*"
+
 	if b.kernel == "4" {
+		ocp = "/sys/devices/platform/ocp/ocp*"
 		slots = "/sys/devices/platform/bone_capemgr"
 	}
+
+	g, _ := glob(ocp)
+	b.ocp = g[0]
+
 	g, _ = glob(slots)
 	b.slots = fmt.Sprintf("%v/slots", g[0])
 }