mtd: msm_qpic_nand: add 10sec SW timeout

Add 10sec SW request timeout for read, write, erase and
isbad functionality.

Change-Id: I647d79a9f9c501f8c3fe8949b4a1d64b52f1abab
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: Pradeep P V K <ppvk@codeaurora.org>