platform/x86/amd/hsmp: Fix iomem handling

Since the metrics table is marked as io memory, use memcpy_fromio()
when copying its contents.

Compile-tested only.

Fixes: 5150542b ("platform/x86/amd/hsmp: add support for metrics tbl")
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20231019135122.21774-1-W_Armin@gmx.de


Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>