bugfix using const variables for linkerscript provided pointers

Author: itzandroidtab

klib/entry/entry.hpp

@@ -10,22 +10,22 @@ extern "C" {
     // linkerscript. Only the address of the variable should be used. The
     // address points to the correct location of the variable. This
     // pointer points to the first address that is not stack
-    extern const uint32_t __stack_start;
+    extern uint32_t __stack_start;
 
     // pointer to the end of the stack. Definition is done in the
     // linkerscript. Only the address of the variable should be used. The
     // address points to the correct location of the variable
-    extern const uint32_t __stack_end;
+    extern uint32_t __stack_end;
 
     // pointer to the start of the heap. Definition is done in the
     // linkerscript. Only the address of the variable should be used. The
     // address points to the correct location of the variable
-    extern const uint32_t __heap_start;
+    extern uint32_t __heap_start;
 
     // pointer to the end of the heap. Definition is done in the
     // linkerscript. Only the address of the variable should be used. The
     // address points to the correct location of the variable
-    extern const uint32_t __heap_end;
+    extern uint32_t __heap_end;
 
     // arm vector table. Can be used to override the weak symbol
     extern void (*const volatile __vectors[])(void);