riscv: Disable IRQ_VECTOR_TABLE_JUMP_BY_CODE for CLIC

Quoting from the SiFive Interrupt Cookbook [0]

  CLIC vectored mode has a similar concept to CLINT vectored mode, where
  an interrupt vector table is used for specific interrupts. However, in
  CLIC vectored mode, the handler table contains the address of the
  interrupt handler instead of an opcode containing a jump instruction.
  When an interrupt occurs in CLIC vectored mode, the address of the
  handler entry from the vector table is loaded and then jumped to in
  hardware

So, when CLIC is present we must use IRQ_VECTOR_TABLE_JUMP_BY_ADDRESS
instead of IRQ_VECTOR_TABLE_JUMP_BY_CODE.

[0] https://starfivetech.com/uploads/sifive-interrupt-cookbook-v1p2.pdf



Signed-off-by: Carlo Caione <ccaione@baylibre.com>