ide-generic: remove broken PPC_PREP support

PPC_PREP has been depending on BROKEN for some time now.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

include/asm-powerpc/ide.h

@@ -31,16 +31,6 @@ static __inline__ int ide_default_irq(unsigned long base)
 	case 0x1f0:	return 14;
 	case 0x170:	return 15;
 	}
-#endif
-#ifdef CONFIG_PPC_PREP
-	switch (base) {
-	case 0x1f0:	return 13;
-	case 0x170:	return 13;
-	case 0x1e8:	return 11;
-	case 0x168:	return 10;
-	case 0xfff0:	return 14;	/* MCP(N)750 ide0 */
-	case 0xffe0:	return 15;	/* MCP(N)750 ide1 */
-	}
 #endif
 	return 0;
 }
@@ -53,14 +43,6 @@ static __inline__ unsigned long ide_default_io_base(int index)
 	case 0:		return 0x1f0;
 	case 1:		return 0x170;
 	}
-#endif
-#ifdef CONFIG_PPC_PREP
-	switch (index) {
-	case 0:		return 0x1f0;
-	case 1:		return 0x170;
-	case 2:		return 0x1e8;
-	case 3:		return 0x168;
-	}
 #endif
 	return 0;
 }