ide: introduce HAVE_IDE

To allow flexible configuration of IDE introduce HAVE_IDE.
All archs except arm, um and s390 unconditionally select it.
For arm the actual configuration determine if IDE is supported.

This is a step towards introducing drivers/Kconfig for arm.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Russell King - ARM Linux <linux@arm.linux.org.uk>
Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

arch/xtensa/Kconfig

@@ -14,6 +14,7 @@ config ZONE_DMA
 config XTENSA
 	bool
 	default y
+	select HAVE_IDE
 	help
 	  Xtensa processors are 32-bit RISC machines designed by Tensilica
 	  primarily for embedded systems.  These processors are both

drivers/ide/Kconfig

@@ -4,10 +4,14 @@
 # Andre Hedrick <andre@linux-ide.org>
 #
 
+# Select HAVE_IDE if IDE is supported
+config HAVE_IDE
+	def_bool n
+
 menuconfig IDE
 	tristate "ATA/ATAPI/MFM/RLL support"
+	depends on HAVE_IDE
 	depends on BLOCK
-	depends on HAS_IOMEM
 	---help---
 	  If you say Y here, your kernel will be able to manage low cost mass
 	  storage units such as ATA/(E)IDE and ATAPI units. The most common

drivers/pcmcia/Kconfig

@@ -38,6 +38,7 @@ config PCMCIA_DEBUG
 config PCMCIA
 	tristate "16-bit PCMCIA support"
 	select CRC32
+	select HAVE_IDE
 	default y
 	---help---
 	   This option enables support for 16-bit PCMCIA cards. Most older