qspi: add support for Phytium QSPI controller

phytium inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I8CAKU


CVE: NA

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Add support for the Phytium Quad SPI controller in master mode.
The implementation only supports SPI NOR.

Signed-off-by: Malloy Liu <liuqi1610@phytium.com.cn>