git: openjdk/jdk-sandbox: riscv-port-branch: Fix use of macro RISCV64 in shared code, renaming to RISCV as necessary.

[duke]

Changeset: 35081d87
Author:    Fei Yang <felix.yang at huawei.com>
Date:      2021-10-13 10:28:45 +0000
URL:       https://git.openjdk.java.net/jdk-sandbox/commit/35081d876f91ca0afaa58b2846c4125fc06bcb14

Fix use of macro RISCV64 in shared code, renaming to RISCV as necessary.

! src/hotspot/os/posix/os_posix.cpp
! src/hotspot/share/utilities/globalDefinitions_gcc.hpp