Use provided __libc_init_array and __libc_fini_array, bugfixes

exosphere/src/warmboot_init.c

@@ -12,9 +12,9 @@ void invalidate_icache_all_tzram_pa(void) {
 }
 
 uintptr_t get_warmboot_crt0_stack_address(void) {
-    return TZRAM_GET_SEGMENT_ADDRESS(TZRAM_SEGMENT_ID_CORE3_STACK) + 0x800;
+    return TZRAM_GET_SEGMENT_PA(TZRAM_SEGMENT_ID_CORE012_STACK) + 0x800;
 }
 
 void warmboot_init(void) {
     /* TODO: Implement. */
-}
+}