ath_hal/ar9300: allow JUPITER cards to read eeprom

Summary:
In ar9300_eeprom_read_word() also allow JUPITER cards read the eeprom
instead of returning an error. While this will not help all the
9462, 9485, 9565 OEM cards to work, it will make debugging of the
next steps a lot easier.

While here fix a typo in the error message if we do not get CAL.

PR: 255337
Tested by: John Nielsen (john jnielsen net)
Reviewed by: adrian
Differential Revision: https://reviews.freebsd.org/D44328