sparc: use _start for the start entry (like 64 bit does)

We use "_start" in 64 bit - do the same in 32 bit.
It is always good to be consistent.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/boot/piggyback_32.c b/arch/sparc/boot/piggyback_32.c
index cfd95ec..5c86a7d 100644
--- a/arch/sparc/boot/piggyback_32.c
+++ b/arch/sparc/boot/piggyback_32.c
@@ -73,9 +73,9 @@
 
 static int start_line(const char *line)
 {
-	if (strcmp(line + 8, " T start\n") == 0)
+	if (strcmp(line + 8, " T _start\n") == 0)
 		return 1;
-	else if (strcmp(line + 16, " T start\n") == 0)
+	else if (strcmp(line + 16, " T _start\n") == 0)
 		return 1;
 	return 0;
 }
@@ -92,7 +92,7 @@
 /*
  * Find address for start and end in System.map.
  * The file looks like this:
- * f0004000 T start
+ * f0004000 T _start
  * f0379f79 A _end
  * 1234567890123456
  * ^coloumn 1