linux-firmware: Split out Realtek chipsets rtl8188 rtl8723 rtl8821
Add rtl8188 rtl8712 rtl8723 rtl8821 packages to install only firmware for the
corresponding chipset. Uses a rather blunt approach by simply adding all firmware
files with matching prefix, to keep the package count down a bit.
(From OE-Core rev:
62a5c0a40d13594a0f16a01701e70dac5e492125)
Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
