driver: iio: imu: Fix the initial values of gyro high for asm330

The initial values of gyro is high because sensor not initialized
properly. Its expected to have delay after each write and fix
order of config as well.

Change-Id: Ic15da0d42b75b9395c514874f5463940b3124e52
Signed-off-by: Puneet Yatnal <puneet@codeaurora.org>