Description: spi: spi-dw: Add lock protect dw_spi rx/tx to prevent concurrent calls References: https://lkml.org/lkml/2020/2/3/559 Notes: Bugs: upstream: released (5.5-rc6) [19b61392c5a852b4e8a0bf35aecb969983c5932d] 4.19-upstream-stable: released (4.19.101) [6fb12237c51e73e65899f9b1df69cd3999b4d90a] 4.9-upstream-stable: released (4.9.224) [15029156d7ac0ae4ec80f577bb25f68fe07c8af1] 3.16-upstream-stable: released (3.16.84) [f358118d34cdd7e898685205bb62e41e9a3246aa] sid: released (5.4.19-1) 4.19-buster-security: released (4.19.118-1) 4.9-stretch-security: released (4.9.228-1) 3.16-jessie-security: released (3.16.84-1)