[nrf noup] boot/zephyr/boards: nrf54l15pdk ext-flash update

This patch supplements the configuration for external flash so
MCUboot can be build with FILE_SUFFIX="ext_flash" for the nrf54l15pdk
instead of explicitly configuration specification.

Signed-off-by: Andrzej Puzdrowski <[email protected]>

Author: nvlsianpu

boot/zephyr/boards/nrf54l15pdk_nrf54l15_cpuapp_ext_flash.conf

@@ -6,3 +6,10 @@ CONFIG_PM_PARTITION_SIZE_MCUBOOT=0x14000
 CONFIG_MAIN_STACK_SIZE=20480
 CONFIG_BOOT_MAX_IMG_SECTORS=512
 CONFIG_SPI_NOR_FLASH_LAYOUT_PAGE_SIZE=4096
+# Ensure that the qspi driver is disabled by default
+CONFIG_NORDIC_QSPI_NOR=n
+
+# TODO: below are not yet supported and need fixing
+CONFIG_FPROTECT=n
+
+CONFIG_BOOT_WATCHDOG_FEED=n

boot/zephyr/boards/nrf54l15pdk_nrf54l15_cpuapp_ext_flash.overlay

@@ -1,6 +1,7 @@
 / {
 	chosen {
 		nordic,pm-ext-flash = &mx25r64;
+		zephyr,code-partition = &boot_partition;
 	};
 };