freertos: initialize freertos repo [1/1]

PD#SWPL-61282

Problem:
Initialize freertos repo with amazon-freertos 201908.00

Solution:
Initialize freertos repo with amazon-freertos 201908.00

Verify:
ad401_a113l

Signed-off-by: kelvin.zhang <kelvin.zhang@amlogic.com>
Change-Id: Ida6422903f0eab5dbc90883c24d7474c5fc28fe3
513 files changed