riscv: compat_vdso: align VDSOAS build log

Add one more space after "VDSOAS" for better alignment in the build log.

[Before]

  LDS     arch/riscv/kernel/compat_vdso/compat_vdso.lds
  VDSOAS arch/riscv/kernel/compat_vdso/rt_sigreturn.o
  VDSOAS arch/riscv/kernel/compat_vdso/getcpu.o
  VDSOAS arch/riscv/kernel/compat_vdso/flush_icache.o
  VDSOAS arch/riscv/kernel/compat_vdso/note.o
  VDSOLD  arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg
  VDSOSYM include/generated/compat_vdso-offsets.h

[After]

  LDS     arch/riscv/kernel/compat_vdso/compat_vdso.lds
  VDSOAS  arch/riscv/kernel/compat_vdso/rt_sigreturn.o
  VDSOAS  arch/riscv/kernel/compat_vdso/getcpu.o
  VDSOAS  arch/riscv/kernel/compat_vdso/flush_icache.o
  VDSOAS  arch/riscv/kernel/compat_vdso/note.o
  VDSOLD  arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg
  VDSOSYM include/generated/compat_vdso-offsets.h

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20231117125843.1058553-1-masahiroy@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

arch/riscv/kernel/compat_vdso/Makefile

@@ -74,5 +74,5 @@ quiet_cmd_compat_vdsold = VDSOLD  $@
                    rm $@.tmp
 
 # actual build commands
-quiet_cmd_compat_vdsoas = VDSOAS $@
+quiet_cmd_compat_vdsoas = VDSOAS  $@
       cmd_compat_vdsoas = $(COMPAT_CC) $(a_flags) $(COMPAT_CC_FLAGS) -c -o $@ $<