accel: Rename accel_init_ops_interfaces() to include 'system'

accel: Rename accel_init_ops_interfaces() to include 'system'

accel_init_ops_interfaces() is system specific, so
rename it as accel_system_init_ops_interfaces() to
ease navigating the code.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20240111120221.35072-2-philmd@linaro.org>