cpufreq/amd-pstate: Fix max_perf updation with schedutil

cpufreq/amd-pstate: Fix max_perf updation with schedutil

In adjust_perf() callback, we are setting the max_perf to highest_perf,
as opposed to the correct limit value i.e. max_limit_perf. Fix that.

Fixes: 3f7b835fa4d0 ("cpufreq/amd-pstate: Move limit updating code")
Signed-off-by: Dhananjay Ugwekar <dhananjay.ugwekar@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20250205112523.201101-3-dhananjay.ugwekar@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>