packagegroup-ni-extra: Add FireFox dependencies to extras
packagegroup-ni-extra: Add FireFox dependencies to extras

Add extra dependencies to support Mozilla FireFox on NILRT.

Signed-off-by: Haris Okanovic <4f2c24956fa4a8756878315db434b9fed29fa615@ni.com>
Natinst-CAR-ID: 539940
Natinst-ReviewBoard-ID: 106773

ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt