platform: mellanox: Change "reset_pwr_converter_fail" attribute

Change "reset_voltmon_upgrade_fail" attribute name to
"reset_pwr_converter_fail".

For systems using "mlxplat_mlxcpld_default_ng_regs_io_data", relevant
CPLD 'register.bit' indicates the failure of power converter, while on
older systems same 'register.bit' indicates failure of voltage monitor
devices upgrade failure.

Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Michael Shych <michaelsh@nvidia.com>
Link: https://lore.kernel.org/r/20230208063331.15560-3-vadimp@nvidia.com


Signed-off-by: Hans de Goede <hdegoede@redhat.com>