Add NVCC inability to compile .hip files notice and workaround

[jamesxu2]

This docs change serves to clarify an error encountered when attempting to compile .hip files with nvcc, through hipcc.

e.g: As encountered by user in #3582

[jamesxu2]

This will probably need to be consolidated around a separate FAQ-rewrite PR, once that gets merged: #3596

[jamesxu2]

@MKKnorr I have revised this change per @yxsamliu's and your comments. It has also been rebased to docs/develop instead of amd-staging to account for the moved how-to/faq.md to root/faq.rst.

[neon60]

@MKKnorr I have revised this change per @yxsamliu's and your comments. It has also been rebased to docs/develop instead of amd-staging to account for the moved how-to/faq.md to root/faq.rst.

@MKKnorr What is the status of this PR?

[MKKnorr]

Sorry, the updates of this PR slipped by me! If you rebase I'll take another look. Sorry for the delay!

[jamesxu2]

Apologies, my attempt to git rebase to the head of docs/develop somehow pulled in commits from the top of docs/develop that appear "new" and prevent merging... I'll spend some time trying to un-footgun myself later this afternoon

Edit: This seems fixed by a force-push

@MKKnorr You can take another look when you have time.

[MKKnorr]

The explanation is good, I would just move it to the compiler related section. Either add a new subsection for it, or you could as well add add the warning to hipcc-detected-my-platform-incorrectly-what-should-i-do

[jamesxu2]

@MKKnorr , the warning has been moved to the section entitled "hipcc detected my platform incorrectly. What should I do?".

Are any other changes needed?

[MKKnorr]

@MKKnorr , the warning has been moved to the section entitled "hipcc detected my platform incorrectly. What should I do?".

Are any other changes needed?

Thanks! Nope, looks good as it is