drivers: flash: Wrap driver instances in device API macro

Use the device API macro to place the driver API instance into an iterable
section.

Signed-off-by: Pieter De Gendt <pieter.degendt@basalte.be>

drivers/flash/flash_andes_qspi.c

@@ -902,7 +902,7 @@ flash_andes_qspi_get_parameters(const struct device *dev)
 	return &config->parameters;
 }
 
-static const struct flash_driver_api flash_andes_qspi_api = {
+static DEVICE_API(flash, flash_andes_qspi_api) = {
 	.read = flash_andes_qspi_read,
 	.write = flash_andes_qspi_write,
 	.erase = flash_andes_qspi_erase,

drivers/flash/soc_flash_cc23x0.c

@@ -223,7 +223,7 @@ static void flash_cc23x0_layout(const struct device *dev, const struct flash_pag
 }
 #endif /* CONFIG_FLASH_PAGE_LAYOUT */
 
-static const struct flash_driver_api flash_cc23x0_api = {
+static DEVICE_API(flash, flash_cc23x0_api) = {
 	.erase = flash_cc23x0_erase,
 	.write = flash_cc23x0_write,
 	.read = flash_cc23x0_read,