Reset wcycle after erase confirm

pfl->wcycle was set to 1 when the erase confirm command was set, which
lead to the next command being misinterpreted by Qemu:

pflash_write: Unimplemented flash cmd sequence (offset 00000000,
wcycle 0x1 cmd 0x20 value 0x70)

This patch fixes this issue by resetting pfl->wcycle to 0 on erase
confirm so that the next command is considered as a new one.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
 hw/pflash_cfi01.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: qemu/hw/pflash_cfi01.c
===================================================================
--- qemu.orig/hw/pflash_cfi01.c
+++ qemu/hw/pflash_cfi01.c
@@ -267,7 +267,7 @@
         case 0x20: /* Block erase */
         case 0x28:
             if (cmd == 0xd0) { /* confirm */
-                pfl->wcycle = 1;
+                pfl->wcycle = 0;
                 pfl->status |= 0x80;
             } else if (cmd == 0xff) { /* read array mode */
                 goto reset_flash;