ARCH_INTEL_SOCFPGA selects CACHE_L2X0 and several PL310 erratum
workarounds. The 753970 workaround is still conditioned on PL310, but that
Kconfig symbol no longer exists, so this one selection is always disabled.
Select PL310_ERRATA_753970 directly, consistently with the other PL310
workarounds required by the platform.
Fixes: fbc125afdc ("ARM: socfpga: Turn on ARM errata for L2 cache")
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
