firmware: arm_scmi: update rate_discrete in clock_describe_rates_get

The boolean rate_discrete needs to be assigned to clk->rate_discrete,
so that clock driver can distinguish between the continuous range and
discrete rates. It uses this in scmi_clk_round_rate could get the
rounded value if it's a continuous range.

Fixes: 5f6c6430 ("firmware: arm_scmi: add initial support for clock protocol")
Signed-off-by: Peng Fan <peng.fan@nxp.com>
[sudeep.holla: updated commit message]
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

drivers/firmware/arm_scmi/clock.c

@@ -185,6 +185,8 @@ scmi_clock_describe_rates_get(const struct scmi_handle *handle, u32 clk_id,
 	if (rate_discrete)
 		clk->list.num_rates = tot_rate_cnt;
 
+	clk->rate_discrete = rate_discrete;
+
 err:
 	scmi_xfer_put(handle, t);
 	return ret;