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PD#160539: check secmon dev in dts and uniform SMC call interface.
1. SMC call interface is provided by ARCH.
arm_smccc_smc(...)
2. check secmon device is registed or not.
Change-Id: I5bd58747db5b167ab8ad59be083f31e7b6395bbf
Signed-off-by: Yan Wang <yan.wang@amlogic.com>
Signed-off-by: jiamin ma <jiamin.ma@amlogic.com>