[Mellanox] Update syncd_init_common.sh to include SAI parameters from per-asic sai profile

[noaOrMlnx]

Changed config_mlnx_syncd() functionality to use per-asic sai.profile for all Spectrum{x} SKUs.
The function will apply specific SKU sai.profile, then per-asic sai.profile and lastly - sai-common.profile (which is for all Mellanox SKUs).

Why I did it
To have the ability to add common parameters to only 1 file instead of all SKUs - but per asic.

depends on noaOrMlnx/sonic-buildimage#66 that installs pciutils to Mellanox syncd docker - so we could execute lspci command inside syncd docker.

[DavidZagury]

Great, approved

[oleksandrivantsiv]

mlxfwmanager is too heavy to use for getting the SPC version. Please use the same approach as we have in the mlnx-fw-update.sh script with the PCI device ID:

function GetAsicType() {
    local -r VENDOR_ID="15b3"

    local -r SPC1_PRODUCT_ID="cb84"
    local -r SPC2_PRODUCT_ID="cf6c"
    local -r SPC3_PRODUCT_ID="cf70"
    local -r SPC4_PRODUCT_ID="cf80"
    local -r SPC5_PRODUCT_ID="cf82"
    local -r BF3_PRODUCT_ID="a2dc"

    local -i QUERY_RETRY_COUNT="0"
    local -i QUERY_RETRY_COUNT_MAX="10"
    local pcitree=$(lspci -n 2>/dev/null)
    ERROR_CODE="$?"

    while [[ ("${QUERY_RETRY_COUNT}" -lt "QUERY_RETRY_COUNT_MAX") && ("${ERROR_CODE}" != "${EXIT_SUCCESS}") ]]; do
        sleep 1s
        ((QUERY_RETRY_COUNT++))
        pcitree=$(lspci -n 2>/dev/null)
        ERROR_CODE="$?"
    done

    if echo $pcitree | grep "${VENDOR_ID}:${SPC1_PRODUCT_ID}" &>/dev/null; then
        echo "${SPC1_ASIC}"
        exit "${EXIT_SUCCESS}"
    elif echo $pcitree | grep "${VENDOR_ID}:${SPC2_PRODUCT_ID}" &>/dev/null; then
        echo "${SPC2_ASIC}"
        exit "${EXIT_SUCCESS}"
    elif echo $pcitree | grep "${VENDOR_ID}:${SPC3_PRODUCT_ID}" &>/dev/null; then
        echo "${SPC3_ASIC}"
        exit "${EXIT_SUCCESS}"
    elif echo $pcitree | grep "${VENDOR_ID}:${SPC4_PRODUCT_ID}" &>/dev/null; then
        echo "${SPC4_ASIC}"
        exit "${EXIT_SUCCESS}"
    elif echo $pcitree | grep "${VENDOR_ID}:${SPC5_PRODUCT_ID}" &>/dev/null; then
        echo "${SPC5_ASIC}"
        exit "${EXIT_SUCCESS}"
    elif echo $pcitree | grep "${VENDOR_ID}:${BF3_PRODUCT_ID}" &>/dev/null; then
        echo "${BF3_NIC}"
        exit "${EXIT_SUCCESS}"
    fi

    echo "${UNKN_ASIC}"
    exit "${EXIT_FAILURE}"
}

[noaOrMlnx]

@oleksandrivantsiv Done. please check.
Also, please review the related PR noaOrMlnx/sonic-buildimage#66