Added support to run pmem_dt_check.py on P11 FW.

On P11 FW pmem_dt_check.py test is skipped as cpu.get_cpu_arch() returns ppc64le.

Signed-off-by: Pavithra <pavrampu@linux.vnet.ibm.com>

Author: Pavithra1602

memory/pmem_dt_check.py

@@ -77,7 +77,7 @@ def setUp(self):
         """
         Build 'ndctl' and setup the binary.
         """
-        if "powerpc" not in cpu.get_cpu_arch():
+        if cpu.get_cpu_arch() not in ["powerpc", "ppc64le"]:
             self.cancel("Test supported only on POWER arch")
 
         deps = []