clk: qcom: smd-rpm_ Make __DEFINE_CLK_SMD_RPM_BRANCH_PREFIX accept flags

In preparation for supporting keepalive clocks which can never be shut off
(as the platform would fall apart otherwise), make the
__DEFINE_CLK_SMD_RPM_BRANCH_PREFIX macro accept clock flags for the
active-only clock.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Tested-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230501-topic-rpmcc_xo_a-v1-1-93f18e47b607@linaro.org