spi: intel: 64k erase is supported from Canon Lake and beyond

The hardware sequencer in Intel Canon Lake and beyond supports also 64k
erase command. The SPI-NOR core uses SFDP (Serial Flash Discovery
Parameter) to figure out what the chip actually supports and only issues
64k erase if it is supported.

Signed-off-by: Mika Westerberg <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

drivers/spi/spi-intel.c

···
 		ispi->pregs = ispi->base + CNL_PR;
 		ispi->nregions = CNL_FREG_NUM;
 		ispi->pr_num = CNL_PR_NUM;
+		erase_64k = true;
 		break;
 
 	default: