powerpc/dt_cpu_ftrs: Add feature for 2nd DAWR
Add new device-tree feature for 2nd DAWR. If this feature is present, 2nd DAWR is supported, otherwise not. Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200723090813.303838-6-ravi.bangoria@linux.ibm.com
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