Allow searching Kconfig symbols without `CONFIG_` prefix

[lucaceresoli]

We can search for Kconfig symbols (in Linux at least) such as CONFIG_DRM_IMX_PARALLEL_DISPLAY, which is great.

Can we allow searching even without the CONFIG_ prefix, e.g. DRM_IMX_PARALLEL_DISPLAY? This would be useful for example when copy-pasting the search string from a Kconfig file, where the CONFIG_ prefix is not present.

[tleb]

Completely agree. I want to make the search bar more lenient. Allow searching filepaths, allow struct or enum prefix, etc. This is a long-term goal however.