omap1: Fix innovator FPGA init for multi-omap

No need to call this early from init_irq. Also recent changes
initialize GPIO now later, so calling gpio_request from init_irq
will make it fail.

While at it, also remove the unnecessary EXPORT_SYMBOL.
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap1/board-innovator.c

@@ -290,11 +290,6 @@ static void __init innovator_init_irq(void)
 {
 	omap1_init_common_hw();
 	omap_init_irq();
-#ifdef CONFIG_ARCH_OMAP15XX
-	if (cpu_is_omap1510()) {
-		omap1510_fpga_init_irq();
-	}
-#endif
 }
 
 #ifdef CONFIG_ARCH_OMAP15XX
@@ -385,6 +380,8 @@ static struct omap_board_config_kernel innovator_config[] = {
 
 static void __init innovator_init(void)
 {
+	if (cpu_is_omap1510())
+		omap1510_fpga_init_irq();
 	innovator_init_smc91x();
 
 #ifdef CONFIG_ARCH_OMAP15XX

arch/arm/mach-omap1/fpga.c

@@ -143,7 +143,7 @@ static struct irq_chip omap_fpga_irq = {
  */
 void omap1510_fpga_init_irq(void)
 {
-	int i;
+	int i, res;
 
 	__raw_writeb(0, OMAP1510_FPGA_IMR_LO);
 	__raw_writeb(0, OMAP1510_FPGA_IMR_HI);
@@ -177,10 +177,12 @@ void omap1510_fpga_init_irq(void)
 	 * NOTE: For general GPIO/MPUIO access and interrupts, please see
 	 * gpio.[ch]
 	 */
-	gpio_request(13, "FPGA irq");
+	res = gpio_request(13, "FPGA irq");
+	if (res) {
+		pr_err("%s failed to get gpio\n", __func__);
+		return;
+	}
 	gpio_direction_input(13);
 	set_irq_type(gpio_to_irq(13), IRQ_TYPE_EDGE_RISING);
 	set_irq_chained_handler(OMAP1510_INT_FPGA, innovator_fpga_IRQ_demux);
 }
-
-EXPORT_SYMBOL(omap1510_fpga_init_irq);

arch/arm/plat-omap/include/plat/fpga.h

@@ -19,11 +19,7 @@
 #ifndef __ASM_ARCH_OMAP_FPGA_H
 #define __ASM_ARCH_OMAP_FPGA_H
 
-#if defined(CONFIG_MACH_OMAP_INNOVATOR) && defined(CONFIG_ARCH_OMAP15XX)
 extern void omap1510_fpga_init_irq(void);
-#else
-#define omap1510_fpga_init_irq()	(0)
-#endif
 
 #define fpga_read(reg)			__raw_readb(reg)
 #define fpga_write(val, reg)		__raw_writeb(val, reg)