powerpc/prom: early_init_dt_scan_cpus() updates cpu features only once

All our cpu feature updates were done for every CPU in the device-tree,
thus overwriting the cputable bits over and over again. Instead do them
only for the boot CPU.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Benjamin Herrenschmidt 2014-03-28 13:36:28 +11:00
commit 7222f779ac