smc91x: Clean up omap interrupt level

Since omap1 does not have level GPIO interrupts, all omap1 class
processors should use falling edge, except for Innovator which
routes the interrupt via FPGA and needs rising edge. All omap2
class processors should use low level interrupt.

Signed-off-by: Tony Lindgren <tony@atomide.com>

--- a/drivers/net/smc91x.h
+++ b/drivers/net/smc91x.h
@@ -192,13 +192,12 @@ #define SMC_outsw(a, r, p, l)	writesw((a
 #include <asm/mach-types.h>
 #include <asm/arch/cpu.h>
 
-#define	SMC_IRQ_FLAGS (( \
-		   machine_is_omap_h2() \
-		|| machine_is_omap_h3() \
-		|| machine_is_omap_h4() \
-		|| (machine_is_omap_innovator() && !cpu_is_omap1510()) \
-	) ? IRQF_TRIGGER_FALLING : IRQF_TRIGGER_RISING)
-
+#ifdef CONFIG_ARCH_OMAP1
+#define	SMC_IRQ_FLAGS	(machine_is_omap_innovator() ? IRQF_TRIGGER_RISING : \
+				IRQF_TRIGGER_FALLING)
+#else
+#define SMC_IRQ_FLAGS		IRQF_TRIGGER_LOW
+#endif
 
 #elif	defined(CONFIG_SH_SH4202_MICRODEV)