[ARM] omap: watchdog: provide a dummy ick for OMAP1

Eliminate the OMAP1 vs OMAP2 clock knowledge in the watchdog driver.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-omap1/clock.c

@@ -86,6 +86,8 @@ static struct omap_clk omap_clks[] = {
 	CLK(NULL,	"armxor_ck",	&armxor_ck.clk,	CK_16XX | CK_1510 | CK_310),
 	CLK(NULL,	"armtim_ck",	&armtim_ck.clk,	CK_16XX | CK_1510 | CK_310),
 	CLK("omap_wdt",	"fck",		&armwdt_ck.clk,	CK_16XX | CK_1510 | CK_310),
+	CLK("omap_wdt",	"ick",		&armper_ck.clk,	CK_16XX),
+	CLK("omap_wdt", "ick",		&dummy_ck,	CK_1510 | CK_310),
 	CLK(NULL,	"arminth_ck",	&arminth_ck1510, CK_1510 | CK_310),
 	CLK(NULL,	"arminth_ck",	&arminth_ck16xx, CK_16XX),
 	/* CK_GEN2 clocks */

drivers/watchdog/omap_wdt.c

@@ -145,7 +145,6 @@ static int omap_wdt_open(struct inode *inode, struct file *file)
 	if (test_and_set_bit(1, (unsigned long *)&(wdev->omap_wdt_users)))
 		return -EBUSY;
 
-	if (wdev->ick)
 	clk_enable(wdev->ick);    /* Enable the interface clock */
 	clk_enable(wdev->fck);    /* Enable the functional clock */
 
@@ -176,7 +175,6 @@ static int omap_wdt_release(struct inode *inode, struct file *file)
 
 	omap_wdt_disable(wdev);
 
-	if (wdev->ick)
 	clk_disable(wdev->ick);
 	clk_disable(wdev->fck);
 #else
@@ -294,14 +292,12 @@ static int __init omap_wdt_probe(struct platform_device *pdev)
 	wdev->omap_wdt_users = 0;
 	wdev->mem = mem;
 
-	if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
 	wdev->ick = clk_get(&pdev->dev, "ick");
 	if (IS_ERR(wdev->ick)) {
 		ret = PTR_ERR(wdev->ick);
 		wdev->ick = NULL;
 		goto err_clk;
 	}
-	}
 	wdev->fck = clk_get(&pdev->dev, "fck");
 	if (IS_ERR(wdev->fck)) {
 		ret = PTR_ERR(wdev->fck);
@@ -383,10 +379,7 @@ static int omap_wdt_remove(struct platform_device *pdev)
 	release_mem_region(res->start, res->end - res->start + 1);
 	platform_set_drvdata(pdev, NULL);
 
-	if (wdev->ick) {
 	clk_put(wdev->ick);
-	}
-
 	clk_put(wdev->fck);
 	iounmap(wdev->base);