Change comment to C89 style per CodingStyle Guide

Change-Id: I34395ac42428478e3aa33171709bfa1f9b871f0b
diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
index 14ee551..7c3715d 100644
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -687,8 +687,8 @@
 		return 0;
 
 	case FL_ERASING:
-		// Apply OpenWRT patch from
-		// https://dev.openwrt.org/browser/trunk/target/linux/generic/patches-3.19/460-mtd-cfi_cmdset_0002-no-erase_suspend.patch
+		/* Apply OpenWRT patch from */
+		/* https://dev.openwrt.org/browser/trunk/target/linux/generic/patches-3.19/460-mtd-cfi_cmdset_0002-no-erase_suspend.patch */
 		if (1 /* no suspend */ || !cfip || !(cfip->EraseSuspend & (0x1|0x2)) || 
 		    !(mode == FL_READY || mode == FL_POINT ||
 		    (mode == FL_WRITING && (cfip->EraseSuspend & 0x2))))