[spi:for-5.2 8/8] drivers/spi/spi-stm32-qspi.c:520:1: sparse: symbol 'stm32_qspi_pm_ops' was not declared. Should it be static?

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-5.2
head:   2e541b64ee5269278fde5c87953a9963a8219ed4
commit: 2e541b64ee5269278fde5c87953a9963a8219ed4 [8/8] spi: spi-mem: stm32-qspi: add suspend/resume support
reproduce:
        # apt-get install sparse
        git checkout 2e541b64ee5269278fde5c87953a9963a8219ed4
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'


sparse warnings: (new ones prefixed by >>)

>> drivers/spi/spi-stm32-qspi.c:520:1: sparse: symbol 'stm32_qspi_pm_ops' was not declared. Should it be static?

Please review and possibly fold the followup patch.

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