arm64: cpufeature: Enable PBHA for stage1 early via FDT

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I7ZC0H


CVE: NA

--------------------------------

Now PBHA can be enabled via FDT table at early startup.

Here is an example for item in FDT table:

cpus {
	arm,pbha-performance-only = <0x01000000 0x00000000 0x00000000 0x00000000>;
};

Signed-off-by: Ma Wupeng <mawupeng1@huawei.com>