CONFIG_PAGE_TABLE_ISOLATION and CONFIG_RETPOLINE should be set in N-OEM-6.10

[Po-Hsu Lin]

Issue reported by ubuntu_qrt_kernel_security test with N-oem-6.10

These two kernel configs are expected to be set to satisfy the test:

 FAIL: test_260_config_PTI (__main__.KernelSecurityConfigTest.test_260_config_PTI)
 Ensure kernel page table isolation is set appropriately
 ----------------------------------------------------------------------
 Traceback (most recent call last):
   File "/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/./test-kernel-security.py", line 2686, in test_260_config_PTI
     self.assertKernelConfig('PAGE_TABLE_ISOLATION', expected)
   File "/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/./test-kernel-security.py", line 231, in assertKernelConfig
     self.assertKernelConfigSet(name)
   File "/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/./test-kernel-security.py", line 217, in assertKernelConfigSet
     self.assertTrue(self._test_config(name),
 AssertionError: False is not true : PAGE_TABLE_ISOLATION option was expected to be set in the kernel config

FAIL: test_265_config_retpoline (__main__.KernelSecurityConfigTest.test_265_config_retpoline)
 Ensure retpoline configuration option is set
 ----------------------------------------------------------------------
 Traceback (most recent call last):
   File "/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/./test-kernel-security.py", line 2702, in test_265_config_retpoline
     self.assertKernelConfig('RETPOLINE', expected)
   File "/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/./test-kernel-security.py", line 231, in assertKernelConfig
     self.assertKernelConfigSet(name)
   File "/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/./test-kernel-security.py", line 217, in assertKernelConfigSet
     self.assertTrue(self._test_config(name),
 AssertionError: False is not true : RETPOLINE option was expected to be set in the kernel config