libutee: riscv: modify the UTEE_SYSCALL assembly

Use li instead of mv in UTEE_SYSCALL, store the num_args
in the t1 register. This works on RV32 and RV64,
so change the compile control and rename th

libutee: riscv: modify the UTEE_SYSCALL assembly

Use li instead of mv in UTEE_SYSCALL, store the num_args
in the t1 register. This works on RV32 and RV64,
so change the compile control and rename the file.

Signed-off-by: liushiwei <liushiwei@eswincomputing.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Marouene Boubakri <marouene.boubakri@nxp.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

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libutee: support RISC-V syscall

Add 64-bit RISC-V TA system call function.
Modify the utee_syscalls_asm.S file to be generic.

Signed-off-by: liushiwei <liushiwei@eswincomputing.com>
Reviewed-by: ch

libutee: support RISC-V syscall

Add 64-bit RISC-V TA system call function.
Modify the utee_syscalls_asm.S file to be generic.

Signed-off-by: liushiwei <liushiwei@eswincomputing.com>
Reviewed-by: chenchaokai <chenchaokai@eswincomputing.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

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