ARM: config: mutual exclusive CPA & LPAE

ARM: config: mutual exclusive CPA & LPAE

Make CONFIG_CPA and CONFIG_ARM_LPAE
mutually exclusive.

Bug 1374612

Change-Id: I1ec2dbe316a52633d19d122d42e18103a838c960
Signed-off-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-on: http://git-master/r/279798
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Kiran Adduri <kadduri@nvidia.com>
Reviewed-by: Matt Craighead <mcraighead@nvidia.com>
Reviewed-by: Krishna Reddy <vdumpa@nvidia.com>
Reviewed-by: Adeel Raza <araza@nvidia.com>
Tested-by: Adeel Raza <araza@nvidia.com>
Reviewed-by: Alexander Van Brunt <avanbrunt@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
(cherry picked from commit 8b550aba000043ff10d9127a082c9faa7e85fcad)
Signed-off-by: Ajay Nandakumar <anandakumarm@nvidia.com>