This fixes warnings detected when compiling in ARM64.
Introduced by 'commit 18674dee ("spi: stm32-qspi: Add dirmap support")'
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Link: https://lore.kernel.org/r/20210420082103.1693-1-patrice.chotard@foss.st.comSigned-off-by: Mark Brown <broonie@kernel.org>