ARM: qcom_defconfig: Enable QRTR

This option is useful on msm8974, so enable it.

Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Link: https://lore.kernel.org/r/20200214183111.50919-1-luca@z3ntu.xyz


Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>