arm64: topology: Initialise default topology state immediately

As a legacy of the way 32 bit ARM did things the topology code uses a null
topology map by default and then overwrites it by mapping cores with no
information to a cluster by themselves later. In order to make it simpler
to reset things as part of recovering from parse failures in firmware
information directly set this configuration on init. A core will always be
its own sibling so there should be no risk of confusion with firmware
provided information.

Change-Id: Ibaa83b2c2fe624b75d82fcb15e91e68eecedf48f
Signed-off-by: Mark Brown <broonie@linaro.org>
Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Patch-mainline: linux-arm-kernel 5/2/2014, 20:38
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>