8295468: RISC-V: Minimal builds are broken

Reviewed-by: stuefe, luhenry, fyang

Author: shipilev

src/hotspot/cpu/riscv/macroAssembler_riscv.cpp

@@ -32,6 +32,7 @@
 #include "gc/shared/barrierSetAssembler.hpp"
 #include "gc/shared/cardTable.hpp"
 #include "gc/shared/cardTableBarrierSet.hpp"
+#include "gc/shared/collectedHeap.hpp"
 #include "interpreter/bytecodeHistogram.hpp"
 #include "interpreter/interpreter.hpp"
 #include "memory/resourceArea.hpp"

src/hotspot/cpu/riscv/nativeInst_riscv.cpp

@@ -32,6 +32,7 @@
 #include "oops/oop.inline.hpp"
 #include "runtime/handles.hpp"
 #include "runtime/orderAccess.hpp"
+#include "runtime/safepoint.hpp"
 #include "runtime/sharedRuntime.hpp"
 #include "runtime/stubRoutines.hpp"
 #include "utilities/ostream.hpp"