svga: Remove duplication in the format table.
By using the [ ] = {} array initializer syntax, we no longer need the
entries to be listed in PIPE_FORMAT_* value order. This means that
people adding new gallium formats don't need to cargo-cult changes to
this driver or regress that non-unit-tested requirement.
While I'm here, drop the lines for formats that no longer exist (the
numbered ones in the table).
Acked-by: Jose Fonseca <jfonseca@vmware.com>
Reviewed-by: Charmaine Lee <charmainel@vmware.com>