arm: tegra14: bbc: update core suspend about EMC rate

arm: tegra14: bbc: update core suspend about EMC rate

Inform LP1BB entry part about the current BBC emc floor and
the corresponding voltage required. These EMC parameters can
be used by LP1 entry low power routine to set optimal values
before entering in LP1BB hw state. The EMC parameter should
also be used by lp1bb exit routine to set the required EMC
frequency and voltage to minimize suspend-resume latency.

Bug 1270116
Bug 1301005

Change-Id: I1a979ae92fd4d579cd5ecc293f5c40203b440e4d
Signed-off-by: Vinayak Pane <vpane@nvidia.com>
Reviewed-on: http://git-master/r/238239
(cherry picked from commit 6b083a4101c7d30dd14b391b2381ed91b938306f)
Reviewed-on: http://git-master/r/254495
Reviewed-by: Mandar Padmawar <mpadmawar@nvidia.com>
Tested-by: Mandar Padmawar <mpadmawar@nvidia.com>