remoteproc: qcom: Replace hard coded values with macros

Replace hard coded values of QDSP6 boot control reg params
with appropriate macro names.

Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Sibi Sankar <quic_sibis@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/1664368073-13659-6-git-send-email-quic_srivasam@quicinc.com