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PD#SWPL-240228 Problem: PIO is applied for spi transfer of 8/16/32 bits_per_word, which is too inefficient for long data. Solution: Split a spi transfer into one dma transfer and a pio transfer, and maintain the validity of bits_per_word and big/little endian if possible. Verify: T5M AY301, SM1 Change-Id: I66b4777dbab521ee9951f3c75309195f2a4b4118 Signed-off-by: Sunny Luo <sunny.luo@amlogic.com>