hwmon/hdaps: Update the list of supported devices

Remove the strange DMI for the R52 (1846AQG)
and add a note to update to latest BIOS in the Kconfig
and source code.

Signed-off-by: Stephan Berberig <s.berberig@arcor.de>
Signed-off-by: Robert Love <rlove@rlove.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index e76d919..39ab2fc 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -527,6 +527,9 @@
 	  This driver also provides an absolute input class device, allowing
 	  the laptop to act as a pinball machine-esque joystick.
 
+	  If your ThinkPad is not recognized by the driver, please update to latest
+	  BIOS. This is especially the case for some R52 ThinkPads.
+
 	  Say Y here if you have an applicable laptop and want to experience
 	  the awesome power of hdaps.