msm: npu: Use different timeout for RSC and power up handshake

Different type of handshake requires different timeout setting.
Also increase IPC command's handshake timeout to 20 seconds and
power up's handshake timeout to 60 seconds.

Change-Id: I6519c2aae60c603767b1e0bb1d75ae91773c86c2
Signed-off-by: Da Hoon Pyun <dpyun@codeaurora.org>