spi: dw: Fix checkpatch issue
Fix the following checkpatch warnings.
WARNING: debugfs_remove_recursive(NULL) is safe this check is probably not required
WARNING: min() should probably be min_t(u32, rx_left, dw_readw(dws, DW_SPI_RXFLR))
WARNING: else is not generally useful after a break or return
WARNING: Missing a blank line after declarations
WARNING: void function return statements are not generally useful
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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