drivers: qti-virtual-sensor: Add virtual sensors for new core combination

Update MAX mode virtual sensors list for hexa cores silver and
dual cores gold clusters combinations. Also update max number of
sensors for a virtual sensor.

Change-Id: I7814145aea762727143c612f36e57552821b105f
Signed-off-by: Manaf Meethalavalappu Pallikunhi <manafm@codeaurora.org>