[IVAHD] Disable HWSUP mode and save power
Enabling HWSUP mode is somehow reducing the performance
of SL2 memory leading to increase in power consumption.
This patch disables it and advertises only SWSUP mode
which seems to improve performance and reduce power
consumed in AV record use-case.

Change-Id: Ie7d06b2a7a8d251820afd63bbb093fa34203c3fa
Signed-off-by: Sundar Raman <sunds@ti.com>