analogin example: add sleep between read
analogin example: add sleep between read

Signed-off-by: Nicola Lunghi <4828aa2f171daefde723b3eaeea1dd38094b115f@emutex.com>
Signed-off-by: Brendan Le Foll <3e0e8c4069934e8b47d99704927a85c66c0ceb33@intel.com>

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