[riscv-port] RFR: 8280236: riscv: Minimal build failed after JDK-8279565

[Fei Yang]

On Wed, 19 Jan 2022 08:59:46 GMT, Feilong Jiang <fjiang at openjdk.org> wrote:

> After JDK-8279565, minimal build complains `'ror_imm' was not declared in this scope` error. The definition of `ror_imm` should move outside of the`COMPILER2` macro.
> 
> With this patch, minimal build passed without errors.

Looks good. Thanks for the extra code cleanup.

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Marked as reviewed by fyang (Lead).

PR: https://git.openjdk.java.net/riscv-port/pull/48