boards: mcx_nx4x_evk: correct W25Q64JV JEDEC ID

The JEDEC ID for the Winbond W25Q64JV flash on the MCX NX4X EVK board
was incorrectly specified as [ef 40 17]. According to the W25Q64JV
datasheet, the correct JEDEC ID is [ef 60 17], where:
- ef: Winbond manufacturer ID
- 60: Memory type (W25Q series)
- 17: Capacity (64 Mbit)

Update the jedec-id property to match the actual flash device.

Signed-off-by: Albort Xue <yao.xue@nxp.com>