cts: Add Bengal target to whitelist in the CTS test case

Bengal target don't need to define CONFIG_UNMAP_KERNEL_AT_EL0,
as the hardware is not vulnerable to CVE-2017-5754.
Hence, whitelisting it.

Bug: 149181790
Fixes: 158021453
Test: run cts --m CtsSecurityHostTestCases --t android.security.cts.KernelConfigTest#testConfigHardwareMitigations
Change-Id: I5375d2c9110d25a725a248e596f1a5367b6ba1fc
Merged-In: I5375d2c9110d25a725a248e596f1a5367b6ba1fc
(cherry picked from commit 190b933924e5f587fec8c7461332d5eb7bafb737)
1 file changed