ide: add CONFIG_IDE_H8300 config option

Add a separate config option for ide-8300 host driver instead of depending
on CONFIG_H8300.

This change is a preparation for the future changes and also allows ide-h8300
to be disabled if needed.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig
index 080d7f5..ca8239a 100644
--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -313,7 +313,6 @@
 
 config IDE_GENERIC
 	tristate "generic/default IDE chipset support"
-	default H8300
 	help
 	  If unsure, say N.
 
@@ -883,6 +882,14 @@
 	  Say Y here if you want to support the onboard IDE channels on the
 	  Simtec BAST or the Thorcom VR1000
 
+config IDE_H8300
+	bool "H8300 IDE support"
+	depends on H8300
+	select IDE_GENERIC
+	default y
+	help
+	  Enables the H8300 IDE driver.
+
 config BLK_DEV_GAYLE
 	bool "Amiga Gayle IDE interface support"
 	depends on AMIGA