Update embedded_start_block.inc.S

Fix added define missed in the latest develop merge

Author: will-v-pi

src/rp2_common/pico_crt0/embedded_start_block.inc.S

@@ -68,7 +68,8 @@
        PICOBIN_IMAGE_TYPE_EXE_CHIP_AS_BITS(RP2040) | \
        CRT0_TBYB_FLAG
 #elif PICO_NONSECURE
-.hword PICOBIN_IMAGE_TYPE_IMAGE_TYPE_AS_BITS(EXE) | \
+#define PICO_CRT0_IMAGE_TYPE_ITEM_VALUE \
+       PICOBIN_IMAGE_TYPE_IMAGE_TYPE_AS_BITS(EXE) | \
        PICOBIN_IMAGE_TYPE_EXE_SECURITY_AS_BITS(NS) | \
        PICOBIN_IMAGE_TYPE_EXE_CPU_AS_BITS(ARM) | \
        PICOBIN_IMAGE_TYPE_EXE_CHIP_AS_BITS(RP2350) | \