[PATCH 2/2] riscv: kprobes: add nop and c.nop to the KUnit test

[Nam Cao]

Xiaofeng Yuan <yuanxiaofeng at eswincomputing.com> writes:
> +SYM_FUNC_START(test_kprobes_nop)
> +	.option push
> +	.option norvc
> +test_kprobes_nop_addr:
> +	nop
> +	.option pop
> +	li a0, KPROBE_TEST_MAGIC_LOWER
> +	li a1, KPROBE_TEST_MAGIC_UPPER

I split the magic number into _LOWER and _UPPER because I wanted to
validate that two instructions in two different code paths are both
executed.

For this simple case, we can just use KPROBE_TEST_MAGIC.

Nam