board/lsi: Build Outside the Git Repository

The LSI version is based on 'git describe --dirty'.  When
not in a clone of the repository, the build failed.  Now it
will succeed, and the LSI version will be UNKNOWN.

Signed-off-by: John Jacques <john.jacques@lsi.com>
board/lsi: Correct Offset of SBB Status Register

Signed-off-by: John Jacques <john.jacques@lsi.com>
board/lsi: Fixed Bug in LSI Version Generation

Signed-off-by: John Jacques <john.jacques@lsi.com>
board/lsi: Fixed Compile Warnings

Signed-off-by: John Jacques <john.jacques@lsi.com>