The Storage subsystem, like the Audio and HID subsystems, exposes Unix
device files (for example, in the /dev directory). To ensure consistency
across the repository, we should make the Storage subsystem to reside in
the Kernel/Devices directory like the two other mentioned subsystems.
This should not affect boot times on qemu, as that does not use
dynamic transfer delays in its adma code path.
On real hardware this could potentially double the data throughput,
decreasing load times.
Currently we do not use interrupts for the SD driver, yet we
had enabled the signaling of all of them.
Since we were never acknowledging them, we were getting spammed by
unnecessary interrupts, causing the system to slow down to a crawl.
This commit makes the system boot in less than 1 minute with PIO,
compared to the old 30+ minute boot.
