lib: optee_client: Extract keymaster CA module

Extract keymaster CA module from OpteeClientInterface
refactoring code for keymaster reads and writes form caller module

Change-Id: I1069fce0d29d9d981

lib: optee_client: Extract keymaster CA module

Extract keymaster CA module from OpteeClientInterface
refactoring code for keymaster reads and writes form caller module

Change-Id: I1069fce0d29d9d9815f71e7f3b4d231754382acd
Signed-off-by: Jian Qiu <qiujian@rock-chips.com>

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