MX25L1605 and 1635 accept Chip Erase opcodes 60 and C7

Corresponding to flashrom svn r432 and coreboot v2 svn r4139.
Signed-off-by: Stephan Guilloux <stephan.guilloux@free.fr>
Acked-by: Peter Stuge <peter@stuge.se>

flashchips.c

@@ -806,7 +806,7 @@ struct flashchip flashchips[] = {
 		.page_size	= 256,
 		.tested		= TEST_UNTESTED,
 		.probe		= probe_spi_rdid,
-		.erase		= spi_chip_erase_c7,
+		.erase		= spi_chip_erase_60_c7,
 		.write		= spi_chip_write,
 		.read		= spi_chip_read,
 	},
@@ -820,7 +820,7 @@ struct flashchip flashchips[] = {
 		.page_size	= 256,
 		.tested		= TEST_UNTESTED,
 		.probe		= probe_spi_rdid,
-		.erase		= spi_chip_erase_c7,
+		.erase		= spi_chip_erase_60_c7,
 		.write		= spi_chip_write,
 		.read		= spi_chip_read,
 	},