RDKCOM-5320: RDKBDEV-3176: use sysctl_iface_set() to write to /proc files

[sowmiyachelliah]

Reason for change:
use sysctl_iface_set() to write to /proc files
Test Procedure: Sanity.
Risks: None
Signed-off-by: Andre McCurdy [email protected]
Priority: P1

Change-Id: I4ac6ae8b9b4ecfc7f20aeaa87ba9ed22698e3aea (cherry picked from commit d7ad7e8e8d615be6ab81f7765b56c628d7ab2d5b)

[CLAassistant]

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