HID: Filtering mag data depending on timestamp

Need this fix to filter updated mag data.

Change-Id: Idaa4f18c6473182c3ac6b81f4f15bcde5526834c
Signed-off-by: Rohit Bandi <rohitbandi@codeaurora.org>
Signed-off-by: Sathish Ambley <sathishambley@codeaurora.org>