RISC-V: Rename im_okay_therefore_i_am to found_boot_cpu

The old name was a bit odd.
Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
Signed-off-by: NAtish Patra <atish.patra@wdc.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>

arch/riscv/kernel/smpboot.c

@@ -50,7 +50,8 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 void __init setup_smp(void)
 {
 	struct device_node *dn = NULL;
-	int hart, im_okay_therefore_i_am = 0;
+	int hart;
+	bool found_boot_cpu = false;
 
 	while ((dn = of_find_node_by_type(dn, "cpu"))) {
 		hart = riscv_of_processor_hartid(dn);
@@ -58,13 +59,13 @@ void __init setup_smp(void)
 			set_cpu_possible(hart, true);
 			set_cpu_present(hart, true);
 			if (hart == smp_processor_id()) {
-				BUG_ON(im_okay_therefore_i_am);
-				im_okay_therefore_i_am = 1;
+				BUG_ON(found_boot_cpu);
+				found_boot_cpu = true;
 			}
 		}
 	}
 
-	BUG_ON(!im_okay_therefore_i_am);
+	BUG_ON(!found_boot_cpu);
 }
 
 int __cpu_up(unsigned int cpu, struct task_struct *tidle)