[Bisected] RX 5700XT Power Consumption On Kernel 5.12.13

## Brief summary of the problem: I've previously used kernel 5.12.12 without issues. Today I've updated to 5.12.13 and noticed a rather significant problem, the SCLK remains locked at the maximum frequency (2090 MHz in my case) with GPU usage pegged at 99% at idle (monitored via `gpu_metrics` and `sensors`). This increased idle power consumption from 8-10 W @ 0.750V in 5.12.12 to a whopping 70-110 W @ 1.18-1.2V in 5.12.13 and also increased temperatures by roughly 15 degrees. Memory clock remains normal at idle: 100 MHz and memory temperatures are the same as well. I've tried the same without Xorg/Wayland in a TTY environment and the issue is the same, max SCLK / usage and high power consumption. ## Hardware description: - CPU: Ryzen 7 3700X - GPU: Sapphire Pulse RX 5700XT - System Memory: Crucial Ballistix Sport LT 2x16 GB (32 GB) @ 3200 MHz - Display(s): 1440p 144 Hz AGON AG271QX - Type of Diplay Connection: DisplayPort ## System information: - Distro name and Version: Arch Linux - Kernel version: 5.12.13 - Custom kernel: N/A - AMD package version: No package ## How to reproduce the issue: - Install kernel 5.12.13 and boot the system - Monitor GPU power consumption and temperatures via `lm_sensors` or frequencies from `gpu_metrics`.

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