arm64: re-order MTE VM_ flags

VM_PKEY_BIT[012] will use VM_HIGH_ARCH_[012], move the MTE VM flags to
accommodate this.

Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20240822151113.1479789-13-joey.gouly@arm.com


Signed-off-by: Will Deacon <will@kernel.org>