spi: amlogic-spisg: Use FIELD_MODIFY()

Use FIELD_MODIFY() to remove open-coded bit manipulation.
No functional change intended.

Signed-off-by: Hans Zhang <18255117159@163.com>
Link: https://patch.msgid.link/20260430155456.36998-3-18255117159@163.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Hans Zhang 2026-04-30 23:54:48 +08:00 • committed by Mark Brown
commit b69bfa5933
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