keymaps: add map for some Lenovo laptops found in Brazillian market

[alfredo]

Summary

Some laptops sold in Brazil have the key "/, ?" in same position where it should be the right control key.
This map should be the same as br.keymap, but with 090 (rctrl) replaced by 115 scancode content (?, /, 0xb0).

Reported by: Andrei Drusian <[e-mail]>
Tested by: Andrei Drusian <[e-mail]>
MFC After: 1 week
Relnotes: yes

[alfredo]

Any suggestion of reviewers for the text in INDEX.keymaps? (en, da, de, fr, es)

[garga]

It looks good to me but I'm not a src committer to approve that