ARM: OMAP1: use BUG_ON where possible

Just use BUG_ON() instead of constructions such as:

	if (...)
		BUG()

A simplified version of the semantic patch that makes this transformation
is as follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression e;
@@
- if (e) BUG();
+ BUG_ON(e);
// </smpl>
Signed-off-by: NSasha Levin <sasha.levin@oracle.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

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

@@ -307,8 +307,7 @@ static void __init omap_fsample_init(void)
 
 	fsample_init_smc91x();
 
-	if (gpio_request(FSAMPLE_NAND_RB_GPIO_PIN, "NAND ready") < 0)
-		BUG();
+	BUG_ON(gpio_request(FSAMPLE_NAND_RB_GPIO_PIN, "NAND ready") < 0);
 	gpio_direction_input(FSAMPLE_NAND_RB_GPIO_PIN);
 
 	omap_cfg_reg(L3_1610_FLASH_CS2B_OE);

arch/arm/mach-omap1/board-h2.c

@@ -411,8 +411,7 @@ static void __init h2_init(void)
 
 	h2_nand_resource.end = h2_nand_resource.start = OMAP_CS2B_PHYS;
 	h2_nand_resource.end += SZ_4K - 1;
-	if (gpio_request(H2_NAND_RB_GPIO_PIN, "NAND ready") < 0)
-		BUG();
+	BUG_ON(gpio_request(H2_NAND_RB_GPIO_PIN, "NAND ready") < 0);
 	gpio_direction_input(H2_NAND_RB_GPIO_PIN);
 
 	omap_cfg_reg(L3_1610_FLASH_CS2B_OE);

arch/arm/mach-omap1/board-h3.c

@@ -406,8 +406,7 @@ static void __init h3_init(void)
 
 	nand_resource.end = nand_resource.start = OMAP_CS2B_PHYS;
 	nand_resource.end += SZ_4K - 1;
-	if (gpio_request(H3_NAND_RB_GPIO_PIN, "NAND ready") < 0)
-		BUG();
+	BUG_ON(gpio_request(H3_NAND_RB_GPIO_PIN, "NAND ready") < 0);
 	gpio_direction_input(H3_NAND_RB_GPIO_PIN);
 
 	/* GPIO10 Func_MUX_CTRL reg bit 29:27, Configure V2 to mode1 as GPIO */

arch/arm/mach-omap1/board-perseus2.c

@@ -275,8 +275,7 @@ static void __init omap_perseus2_init(void)
 
 	perseus2_init_smc91x();
 
-	if (gpio_request(P2_NAND_RB_GPIO_PIN, "NAND ready") < 0)
-		BUG();
+	BUG_ON(gpio_request(P2_NAND_RB_GPIO_PIN, "NAND ready") < 0);
 	gpio_direction_input(P2_NAND_RB_GPIO_PIN);
 
 	omap_cfg_reg(L3_1610_FLASH_CS2B_OE);