docs/faq: Introduce FAQ section with initial faulty hardware device section

* List the supported hardware devices which can be used as an
  altrnative for the respetive faulty device.
* New FAQ folder created under docs to accommodate all new FAQs
  related to meta-ohos.
* Reference to the FAQ provided from the relevant topics.
* This closes #59

Signed-off-by: shettygururaj <gururaj.shetty@huawei.com>