ide: build-fix for CONFIG_BLK_DEV_IDEDMA_PMAC=n

IDE pmac host driver build fails with CONFIG_BLK_DEV_IDEDMA_PMAC=n
as reported by Kamalesh:

> drivers/ide/pmac.c: In function 'pmac_ide_set_pio_mode':
> drivers/ide/pmac.c:527: error: implicit declaration of function 'kauai_lookup_timing'
> drivers/ide/pmac.c:527: error: 'shasta_pio_timings' undeclared (first use in this function)
> drivers/ide/pmac.c:527: error: (Each undeclared identifier is reported only once
> drivers/ide/pmac.c:527: error: for each function it appears in.)
> drivers/ide/pmac.c:534: error: 'kauai_pio_timings' undeclared (first use in this function)
> drivers/ide/pmac.c: In function 'pmac_ide_do_resume':
> drivers/ide/pmac.c:914: error: 'IDE_WAKEUP_DELAY' undeclared (first use in this function)
> drivers/ide/pmac.c: At top level:
> drivers/ide/pmac.c:1007: error: 'pmac_ide_init_dma' undeclared here (not in a function)
> drivers/ide/pmac.c: In function 'pmac_ide_setup_device':
> drivers/ide/pmac.c:1107: error: 'IDE_WAKEUP_DELAY' undeclared (first use in this function)
> drivers/ide/pmac.c: In function 'pmac_ide_macio_attach':
> drivers/ide/pmac.c:1209: error: 'pmac_ide_hwif_t' has no member named 'dma_regs'
> drivers/ide/pmac.c:1210: error: 'pmac_ide_hwif_t' has no member named 'dma_regs'
> make[2]: *** [drivers/ide/pmac.o] Error 1

Fix it by removing the superfluous config option.

Reported-and-tested-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig
index 6d74017..e6857e0 100644
--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -669,10 +669,12 @@
 
 endif
 
+# TODO: BLK_DEV_IDEDMA_PCI -> BLK_DEV_IDEDMA_SFF
 config BLK_DEV_IDE_PMAC
 	tristate "PowerMac on-board IDE support"
 	depends on PPC_PMAC && IDE=y
 	select IDE_TIMINGS
+	select BLK_DEV_IDEDMA_PCI
 	help
 	  This driver provides support for the on-board IDE controller on
 	  most of the recent Apple Power Macintoshes and PowerBooks.
@@ -689,16 +691,6 @@
 	  CD-ROM on hda. This option changes this to more natural hda for
 	  hard disk and hdc for CD-ROM.
 
-config BLK_DEV_IDEDMA_PMAC
-	bool "PowerMac IDE DMA support"
-	depends on BLK_DEV_IDE_PMAC
-	select BLK_DEV_IDEDMA_PCI
-	help
-	  This option allows the driver for the on-board IDE controller on
-	  Power Macintoshes and PowerBooks to use DMA (direct memory access)
-	  to transfer data to and from memory.  Saying Y is safe and improves
-	  performance.
-
 config BLK_DEV_IDE_AU1XXX
        bool "IDE for AMD Alchemy Au1200"
        depends on SOC_AU1200
@@ -912,7 +904,7 @@
 endif
 
 config BLK_DEV_IDEDMA
-	def_bool BLK_DEV_IDEDMA_SFF || BLK_DEV_IDEDMA_PMAC || \
+	def_bool BLK_DEV_IDEDMA_SFF || \
 		 BLK_DEV_IDEDMA_ICS || BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
 
 endif # IDE