[gcc r14-9144] RISC-V: Point our Python scripts at python3

[Kito Cheng <kito@gcc.gnu.org>]

https://gcc.gnu.org/g:23f5da91ccb4927562ea4d1c245639bfd4a0088b

commit r14-9144-g23f5da91ccb4927562ea4d1c245639bfd4a0088b
Author: Palmer Dabbelt <palmer@rivosinc.com>
Date:   Fri Feb 9 08:53:24 2024 -0800

    RISC-V: Point our Python scripts at python3
    
    This builds for me, and I frequently have python-is-python3 type
    packages installed so I think I've been implicitly testing it for a
    while.  Looks like Kito's tested similar configurations, and the
    bugzilla indicates we should be moving over.
    
    gcc/ChangeLog:
    
            PR other/109668
            * config/riscv/arch-canonicalize: Move to python3
            * config/riscv/multilib-generator: Likewise

Diff:
---
 gcc/config/riscv/arch-canonicalize  | 2 +-
 gcc/config/riscv/multilib-generator | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/config/riscv/arch-canonicalize b/gcc/config/riscv/arch-canonicalize
index 629bed853471..8f7d040cdeb9 100755
--- a/gcc/config/riscv/arch-canonicalize
+++ b/gcc/config/riscv/arch-canonicalize
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # Tool for canonical RISC-V architecture string.
 # Copyright (C) 2011-2024 Free Software Foundation, Inc.
diff --git a/gcc/config/riscv/multilib-generator b/gcc/config/riscv/multilib-generator
index 1a957878d0cb..25cb6762ea73 100755
--- a/gcc/config/riscv/multilib-generator
+++ b/gcc/config/riscv/multilib-generator
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # RISC-V multilib list generator.
 # Copyright (C) 2011-2024 Free Software Foundation, Inc.