Missing ARM64_SW_TTBR0_PAN on Impish/Oracle arm64 (ubuntu_qrt_kernel_security)

[Krzysztof Kozlowski]

2022.01.31/impish/linux-oracle/5.13.0-1018.22
VM.Standard.A1.Flex-4c.8m
test: ubuntu_qrt_kernel_security

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7218 ======================================================================
7219 FAIL: test_320_config_arm_pan (__main__.KernelSecurityConfigTest)
7220 Ensure PAN for arm processors is set
7221 ----------------------------------------------------------------------
7222 Traceback (most recent call last):
7223 File "./test-kernel-security.py", line 2762, in test_320_config_arm_pan
7224 self.assertKernelConfig(config_name, expected)
7225 File "./test-kernel-security.py", line 214, in assertKernelConfig
7226 self.assertKernelConfigSet(name)
7227 File "./test-kernel-security.py", line 201, in assertKernelConfigSet
7228 '%s option was expected to be set in the kernel config' % name)
7229 AssertionError: ARM64_SW_TTBR0_PAN option was expected to be set in the kernel config
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