riscv: cpu_ops_sbi: smp_processor_id() returns int, not unsigned int

The print in sbi_cpu_stop() assumes smp_processor_id() returns an
unsigned int, when it is actually an int. Fix the format string to
avoid mismatch type warnings in rht pr_crit().

Signed-off-by: Ben Dooks <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Paul Walmsley <[e-mail]>

arch/riscv/kernel/cpu_ops_sbi.c

···
 	int ret;
 
 	ret = sbi_hsm_hart_stop();
-	pr_crit("Unable to stop the cpu %u (%d)\n", smp_processor_id(), ret);
+	pr_crit("Unable to stop the cpu %d (%d)\n", smp_processor_id(), ret);
 }
 
 static int sbi_cpu_is_stopped(unsigned int cpuid)