4.6.2 Output of modinfo does not show retpoline support

A bug in the Oracle Linux 8 code causes retropline support to not be displayed in the output of the modinfo command, even though the CONFIG_RETPOLINE flag is set to Y, for example:

# modinfo -F retpoline
/usr/lib/modules/4.18.0-80.el8.x86_64/kernel/sound/usb/usx2y/snd-usb-us122l.ko.xz
#

The CONFIG_RETPOLINE=Y flag is still required to add and display retpoline support. If the parameter is enabled, the kernel will built with a retpoline-capable compiler.

(Bug ID 29894295)