Replace DT_SPI_NOR_DRV_NAME with DT_JEDEC_SPI_NOR_0_LABEL

Zephyr mainline now generates DT_JEDEC_SPI_NOR_0_LABEL instead of
DT_SPI_NOR_DRV_NAME.

Signed-off-by: Rajavardhan Gundi <rajavardhan.gundi@intel.com>
Signed-off-by: Andrzej Puzdrowski <andrzej.puzdrowski@nordicsemi.no>
diff --git a/boot/zephyr/main.c b/boot/zephyr/main.c
index f4bc4ab..236f80c 100644
--- a/boot/zephyr/main.c
+++ b/boot/zephyr/main.c
@@ -164,9 +164,9 @@
         while (1)
             ;
     }
-#elif (defined(CONFIG_XTENSA) && defined(DT_SPI_NOR_DRV_NAME))
-    if (!flash_device_get_binding(DT_SPI_NOR_DRV_NAME)) {
-        BOOT_LOG_ERR("Flash device %s not found", DT_SPI_NOR_DRV_NAME);
+#elif (defined(CONFIG_XTENSA) && defined(DT_JEDEC_SPI_NOR_0_LABEL))
+    if (!flash_device_get_binding(DT_JEDEC_SPI_NOR_0_LABEL)) {
+        BOOT_LOG_ERR("Flash device %s not found", DT_JEDEC_SPI_NOR_0_LABEL);
         while (1)
             ;
     }