phb4: Fix TVE encoding for start address
phb4: Fix TVE encoding for start address

>From the phb4 spec, when encoding the TVE, the pci start address bits
49:24 are encoded in bits TVE[52:53]||[0:23].
The mask to select bits 47:24 is incorrectly set. It should be
0xffffff000000, shifted left by 16, i.e. 0xffffff << 40

Signed-off-by: Frederic Barrat <c90240987c583ac0802fbeb88cb1684edc683e18@linux.vnet.ibm.com>
Reviewed-By: Alistair Popple <e9adbcf81c8a36ccc628e09bc92d0e25e1c8e501@popple.id.au>
Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>

qemu/skiboot,shenki/skiboot,open-power/skiboot,stewart-ibm/skiboot,shenki/skiboot,stewart-ibm/skiboot,mikey/skiboot,shenki/skiboot,legoater/skiboot,shenki/skiboot,qemu/skiboot,legoater/skiboot,open-power/skiboot,legoater/skiboot,open-power/skiboot,mikey/skiboot,open-power/skiboot,legoater/skiboot,open-power/skiboot,stewart-ibm/skiboot,qemu/skiboot,shenki/skiboot,mikey/skiboot,qemu/skiboot,qemu/skiboot,legoater/skiboot