How can I suppress ACPI Warning messages ?

From: Masachika ISHIZUKA <ish_at_amail.plala.or.jp>
Date: Sun, 24 Apr 2022 02:43:21 UTC
I'm using 14.0-current on old DELL xps12 notebook.
Xconsole on it is fillfulled the 'ACPI Warning: Firmware issue:
Excessive sleep time (0x0000000000000014 ms > 10 ms) in ACPI
Control Method (20220331/exsystem-347)' messages and I'm failling
to see other important messages.
How can I suppress this ACPI warning messages ?
-- 
Masachika ISHIZUKA