ARM: add __aeabi_unwind_cpp_pr0() function to avoid linker complaints

Signed-off-by: Wolfgang Denk <wd@denx.de>
Tested-by: Thomas Weber <weber@corscience.de>

arch/arm/lib/eabi_compat.c

@@ -16,3 +16,8 @@ int raise (int signum)
 	printf("raise: Signal # %d caught\n", signum);
 	return 0;
 }
+
+/* Dummy function to avoid linker complaints */
+void __aeabi_unwind_cpp_pr0(void)
+{
+};