engine: platform: psvita: attempt to fix PSVita builds by exporting _impure_ptr

engine/platform/psvita/sys_psvita.c

@@ -41,6 +41,7 @@ extern void *__aeabi_idivmod;
 extern void *__aeabi_uidivmod;
 extern void *__aeabi_d2ulz;
 extern void *__aeabi_ul2d;
+extern void *_impure_ptr;
 
 static const vrtld_export_t aux_exports[] =
 {
@@ -50,6 +51,7 @@ static const vrtld_export_t aux_exports[] =
 	VRTLD_EXPORT_SYMBOL( __aeabi_uidivmod ),
 	VRTLD_EXPORT_SYMBOL( __aeabi_uidiv ),
 	VRTLD_EXPORT_SYMBOL( __aeabi_ul2d ),
+	VRTLD_EXPORT_SYMBOL( _impure_ptr ),
 	VRTLD_EXPORT_SYMBOL( ctime ),
 	VRTLD_EXPORT_SYMBOL( vasprintf ),
 	VRTLD_EXPORT_SYMBOL( vsprintf ),