[PATCH SLOF] pci-properties: Remove redundant call to device-type

[Alexey Kardashevskiy <aik@ozlabs.ru>]

At the moment SLOF adds a "device_type" property automatically for
every single PCI device based on its class even if there is no SLOF
driver for such a device. OF1275 says that "device_type" is for
implemented interfaces only. A side effect of this is virtio-balloon
getting device_type=="memory" while it should not have.

This removes automatic call to device-type from the common PCI code.
Since now, we rely on existing SLOF PCI drivers to call device-type if
needed. virtio-blk/net, e1000, ohci/ehci/xhci do this. virtio-scsi
does not create the property for itself but disks on its bus do.
virtio-ballon won't get the device_type property as there is no driver
for it.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---

I'll wait for a couple of days and push it to github if nobody objects.
Ben suggested that the linux guest must not rely on device_type in the common
case.

---
 slof/fs/pci-properties.fs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/slof/fs/pci-properties.fs b/slof/fs/pci-properties.fs
index a19c651..9efa87e 100644
--- a/slof/fs/pci-properties.fs
+++ b/slof/fs/pci-properties.fs
@@ -565,7 +565,7 @@
 \ ***************************************************************************************
 \ set up common properties for devices and bridges
 : pci-common-props ( addr -- )
-        dup pci-class-name 2dup device-name device-type
+        dup pci-class-name device-name
         dup pci-vendor@    encode-int s" vendor-id"      property
         dup pci-device@    encode-int s" device-id"      property
         dup pci-revision@  encode-int s" revision-id"    property
-- 
2.0.0