b43legacy: Do not select HW_RANDOM

Auto-depend on HW_RANDOM, rather than "select"ing it.
This way the user has the choice to enable or disable HWRNG support.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/b43legacy/Kconfig b/drivers/net/wireless/b43legacy/Kconfig
index aef2298..d4f628a 100644
--- a/drivers/net/wireless/b43legacy/Kconfig
+++ b/drivers/net/wireless/b43legacy/Kconfig
@@ -3,7 +3,6 @@
 	depends on SSB_POSSIBLE && MAC80211 && WLAN_80211 && HAS_DMA
 	select SSB
 	select FW_LOADER
-	select HW_RANDOM
 	---help---
 	  b43legacy is a driver for 802.11b devices from Broadcom (BCM4301 and
 	  BCM4303) and early model 802.11g chips (BCM4306 Ver. 2) used in the
@@ -51,6 +50,13 @@
 	depends on B43LEGACY && (RFKILL = y || RFKILL = B43LEGACY) && RFKILL_INPUT && (INPUT_POLLDEV = y || INPUT_POLLDEV = B43LEGACY)
 	default y
 
+# This config option automatically enables b43 HW-RNG support,
+# if the HW-RNG core is enabled.
+config B43LEGACY_HWRNG
+	bool
+	depends on B43LEGACY && (HW_RANDOM = y || HW_RANDOM = B43LEGACY)
+	default y
+
 config B43LEGACY_DEBUG
 	bool "Broadcom 43xx-legacy debugging"
 	depends on B43LEGACY