rt2800: 5592: add channels table

Based on:
RT5592_ChipSwitchChannel()
RT5592_Frequency_Plan_Xtal20M[]
RT5592_Frequency_Plan_Xtal40M[]

from:
DPO_RT5572_LinuxSTA_2.6.1.3_20121022/chips/rt5592.c

Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl>
Tested-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2800.h b/drivers/net/wireless/rt2x00/rt2800.h
index 58c0164..b72f71d 100644
--- a/drivers/net/wireless/rt2x00/rt2800.h
+++ b/drivers/net/wireless/rt2x00/rt2800.h
@@ -692,6 +692,12 @@
 #define GPIO_SWITCH_7			FIELD32(0x00000080)
 
 /*
+ * FIXME: where the DEBUG_INDEX name come from?
+ */
+#define MAC_DEBUG_INDEX			0x05e8
+#define MAC_DEBUG_INDEX_XTAL		FIELD32(0x80000000)
+
+/*
  * MAC Control/Status Registers(CSR).
  * Some values are set in TU, whereas 1 TU == 1024 us.
  */