asmc: Add support for MacBookPro6,2

Modify asmc_sms_printintr() to be silent when the ambient light sensor
interrupt fires on this model, since the messages can otherwise fill up
the dmesg.

PR: 265005
Reviewed by: markj

(cherry picked from commit 3416f5cde7a7e01b25b5f5fd240ae8aa12fd70bf)