The standard 'success' output of insn_decoder_test spams build logs with:

  arch/x86/tools/insn_sanity: Success: decoded and checked 1000000 random instructions with 0 errors (seed:0x2e263877)

Prefix the message with the standard '  ' (two spaces) used by kbuild
to denote regular build messages, making it easier for tools to
filter out warnings and errors.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Michal Marek <michal.lkml@markovi.net>
---
 arch/x86/tools/insn_sanity.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/tools/insn_sanity.c b/arch/x86/tools/insn_sanity.c
index 213f35f94feb..e743f0ea01ee 100644
--- a/arch/x86/tools/insn_sanity.c
+++ b/arch/x86/tools/insn_sanity.c
@@ -253,9 +253,9 @@ int main(int argc, char **argv)
 	}
 
 	fprintf((errors) ? stderr : stdout,
-		"%s: %s: decoded and checked %d %s instructions with %d errors (seed:0x%x)\n",
+		"  %s: %s: Decoded and checked %d %s instructions with %d errors (seed:0x%x)\n",
 		prog,
-		(errors) ? "Failure" : "Success",
+		(errors) ? "failure" : "success",
 		insns,
 		(input_file) ? "given" : "random",
 		errors,
-- 
2.45.2