drivers: flash: Mark numaker series RMC as no_explicit_erase

The device is based on ReRAM and does not require erase.

Signed-off-by: Dominik Ermel <dominik.ermel@nordicsemi.no>

drivers/flash/Kconfig.numaker_rmc

@@ -8,6 +8,7 @@ config SOC_FLASH_NUMAKER_RMC
 	default y
 	select FLASH_HAS_PAGE_LAYOUT
 	select FLASH_HAS_DRIVER_ENABLED
+	select FLASH_HAS_NO_EXPLICIT_ERASE
 	select HAS_NUMAKER_RMC
 	depends on DT_HAS_NUVOTON_NUMAKER_RMC_ENABLED
 	help

drivers/flash/soc_flash_numaker_rmc.c

@@ -29,6 +29,9 @@ struct flash_numaker_data {
 static const struct flash_parameters flash_numaker_parameters = {
 	.write_block_size = SOC_NV_FLASH_WRITE_BLOCK_SIZE,
 	.erase_value = 0xff,
+	.caps = {
+		.no_explicit_erase = true,
+	},
 };
 
 /* Validate offset and length */