radio: iris: Fix the sleep power issue

- In sleep, 3A group RDS is not disabled. SOC processing 3A group and
  sending events to HOST. APPS processor getting wakup for every 500msec.
- Disabled 3A group RDS in sleep and enabled back in resume.

CRs-Fixed: 854139
Change-Id: I2db17c539ba03e7a75e2ec05114a4dc21fabd1a5
Signed-off-by: Venkateshwarlu Domakonda <vdomak@codeaurora.org>