Using fixed partitions is recommended way how to describe QSPI. Also add
label for qspi flash memory to be able to reference it in future.
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/7368dc772d8dc29477a880ac2065e2ecb98cf3f5.1684767562.git.michal.simek@amd.com