bootloader_support: exclude bootloader_init.c when building app

Depending on link order of libraries, bootloader implementation of
__assert_func could be linked instead of the one provided by newlib.

components/bootloader_support/CMakeLists.txt

@@ -1,7 +1,6 @@
 set(COMPONENT_SRCS "src/bootloader_clock.c"
                    "src/bootloader_common.c"
                    "src/bootloader_flash.c"
-                   "src/bootloader_init.c"
                    "src/bootloader_random.c"
                    "src/bootloader_sha.c"
                    "src/bootloader_utility.c"
@@ -17,6 +16,7 @@ if(${BOOTLOADER_BUILD})
     set(COMPONENT_ADD_INCLUDEDIRS "include include_bootloader")
     set(COMPONENT_REQUIRES)
     set(COMPONENT_PRIV_REQUIRES spi_flash micro-ecc)
+    list(APPEND COMPONENT_SRCS "src/bootloader_init.c")
 else()
     set(COMPONENT_ADD_INCLUDEDIRS "include")
     set(COMPONENT_PRIV_INCLUDEDIRS "include_bootloader")

components/bootloader_support/component.mk

@@ -9,6 +9,10 @@ endif
 
 COMPONENT_SRCDIRS := src
 
+ifndef IS_BOOTLOADER_BUILD
+COMPONENT_OBJEXCLUDE := src/bootloader_init.o
+endif
+
 #
 # Secure boot signing key support
 #