wimax/i2400m: introduce i2400m_reset(), stopping TX and carrier

Currently the i2400m driver was resetting by just calling
i2400m->bus_reset(). However, this was missing stopping the TX queue
and downing the carrier. This was causing, for the corner case of the
driver reseting a device that refuses to go out of idle mode, that a
few packets would be queued and more than one reset would go through,
making the recovery a wee bit messy.

To avoid introducing the same cleanup in all the bus-specific driver,
introduced a i2400m_reset() function that takes care of house cleaning
and then calling the bus-level reset implementation.

The bulk of the changes in all files are just to rename the call from
i2400m->bus_reset() to i2400m_reset().

Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
diff --git a/drivers/net/wimax/i2400m/debugfs.c b/drivers/net/wimax/i2400m/debugfs.c
index 9b81af3..b1aec3e 100644
--- a/drivers/net/wimax/i2400m/debugfs.c
+++ b/drivers/net/wimax/i2400m/debugfs.c
@@ -214,7 +214,7 @@
 	case I2400M_RT_WARM:
 	case I2400M_RT_COLD:
 	case I2400M_RT_BUS:
-		result = i2400m->bus_reset(i2400m, rt);
+		result = i2400m_reset(i2400m, rt);
 		if (result >= 0)
 			result = 0;
 	default: