ramips: 5.15: handle error from device_reset in SPI ralink driver

ramips: 5.15: handle error from device_reset in SPI ralink driver

Handle error from device reset in SPI ralink driver fixing compilation
warning:

drivers/spi/spi-rt2880.c: In function 'rt2880_spi_probe':
drivers/spi/spi-rt2880.c:474:17: error: ignoring return value of 'device_reset' declared with attribute 'warn_unused_result' [-Werror=unused-result]
  474 |                 device_reset(&pdev->dev);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>