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: I71f130976134c989ea26f907d9915a0c8cc6f657
Signed-off-by: Jilai Wang <jilaiw@codeaurora.org>