sh: fix R2D-1 CF support

This patch fixes CF support for R2D-1 boards. Both R2D-1 and
R2D-PLUS are equipped with CF IRQs, but the R2D-1 FPGA version
seem to deliver IRQ spikes with certain CF cards during libata
probing.  This patch enables polling for R2D-1 as a workaround
for this broken FGPA logic.

R2D-1 CF support was recently introduced by commit:
43f4b8c.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/boards/renesas/rts7751r2d/setup.c

@@ -53,10 +53,12 @@ static struct resource cf_ide_resources[] = {
 		.end	= PA_AREA5_IO + 0x80c,
 		.flags	= IORESOURCE_MEM,
 	},
+#ifndef CONFIG_RTS7751R2D_1 /* For R2D-1 polling is preferred */
 	[2] = {
 		.start	= IRQ_CF_IDE,
 		.flags	= IORESOURCE_IRQ,
 	},
+#endif
 };
 
 static struct pata_platform_info pata_info = {