bcma: extract SPROM rev 9 the same way as rev 8

SPROM rev 9 was discovered on 14e4:4331, it seems to have very similar
layout to rev 8 one. Use the same extracting function until we find some
differences.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/bcma/sprom.c b/drivers/bcma/sprom.c
index 8e8d5cf..52917e5 100644
--- a/drivers/bcma/sprom.c
+++ b/drivers/bcma/sprom.c
@@ -112,7 +112,7 @@
 		return err;
 
 	revision = sprom[SSB_SPROMSIZE_WORDS_R4 - 1] & SSB_SPROM_REVISION_REV;
-	if (revision != 8) {
+	if (revision != 8 && revision != 9) {
 		pr_err("Unsupported SPROM revision: %d\n", revision);
 		return -ENOENT;
 	}