platform/x86/amd/hsmp: fix building with CONFIG_HWMON=m

platform/x86/amd/hsmp: fix building with CONFIG_HWMON=m

When CONFIG_HWMON is built as a loadable module, the HSMP drivers
cannot be built-in:

ERROR: modpost: "hsmp_create_sensor" [drivers/platform/x86/amd/hsmp/amd_hsmp.ko] undefined!
ERROR: modpost: "hsmp_create_sensor" [drivers/platform/x86/amd/hsmp/hsmp_acpi.ko] undefined!

Enforce that through the usual Kconfig dependnecy trick.

Fixes: 92c025db52bb ("platform/x86/amd/hsmp: Report power via hwmon sensors")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20250522144422.2824083-1-arnd@kernel.org
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>