fbdev: omapfb: Use kstrtobool() instead of strtobool()

strtobool() is the same as kstrtobool().
However, the latter is more used within the kernel.

In order to remove strtobool() and slightly simplify kstrtox.h, switch to
the other function name.

While at it, include the corresponding header file (<linux/kstrtox.h>)
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Helge Deller <deller@gmx.de>

drivers/video/fbdev/omap2/omapfb/dss/display-sysfs.c

@@ -10,6 +10,7 @@
 #define DSS_SUBSYS_NAME "DISPLAY"
 
 #include <linux/kernel.h>
+#include <linux/kstrtox.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/sysfs.h>
@@ -36,7 +37,7 @@ static ssize_t display_enabled_store(struct omap_dss_device *dssdev,
 	int r;
 	bool enable;
 
-	r = strtobool(buf, &enable);
+	r = kstrtobool(buf, &enable);
 	if (r)
 		return r;
 
@@ -73,7 +74,7 @@ static ssize_t display_tear_store(struct omap_dss_device *dssdev,
 	if (!dssdev->driver->enable_te || !dssdev->driver->get_te)
 		return -ENOENT;
 
-	r = strtobool(buf, &te);
+	r = kstrtobool(buf, &te);
 	if (r)
 		return r;
 
@@ -183,7 +184,7 @@ static ssize_t display_mirror_store(struct omap_dss_device *dssdev,
 	if (!dssdev->driver->set_mirror || !dssdev->driver->get_mirror)
 		return -ENOENT;
 
-	r = strtobool(buf, &mirror);
+	r = kstrtobool(buf, &mirror);
 	if (r)
 		return r;
 

drivers/video/fbdev/omap2/omapfb/dss/manager-sysfs.c

@@ -10,6 +10,7 @@
 #define DSS_SUBSYS_NAME "MANAGER"
 
 #include <linux/kernel.h>
+#include <linux/kstrtox.h>
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
@@ -246,7 +247,7 @@ static ssize_t manager_trans_key_enabled_store(struct omap_overlay_manager *mgr,
 	bool enable;
 	int r;
 
-	r = strtobool(buf, &enable);
+	r = kstrtobool(buf, &enable);
 	if (r)
 		return r;
 
@@ -290,7 +291,7 @@ static ssize_t manager_alpha_blending_enabled_store(
 	if(!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER))
 		return -ENODEV;
 
-	r = strtobool(buf, &enable);
+	r = kstrtobool(buf, &enable);
 	if (r)
 		return r;
 
@@ -329,7 +330,7 @@ static ssize_t manager_cpr_enable_store(struct omap_overlay_manager *mgr,
 	if (!dss_has_feature(FEAT_CPR))
 		return -ENODEV;
 
-	r = strtobool(buf, &enable);
+	r = kstrtobool(buf, &enable);
 	if (r)
 		return r;
 

drivers/video/fbdev/omap2/omapfb/dss/overlay-sysfs.c

@@ -13,6 +13,7 @@
 #include <linux/err.h>
 #include <linux/sysfs.h>
 #include <linux/kobject.h>
+#include <linux/kstrtox.h>
 #include <linux/platform_device.h>
 
 #include <video/omapfb_dss.h>
@@ -210,7 +211,7 @@ static ssize_t overlay_enabled_store(struct omap_overlay *ovl, const char *buf,
 	int r;
 	bool enable;
 
-	r = strtobool(buf, &enable);
+	r = kstrtobool(buf, &enable);
 	if (r)
 		return r;
 

drivers/video/fbdev/omap2/omapfb/omapfb-sysfs.c

@@ -15,6 +15,7 @@
 #include <linux/uaccess.h>
 #include <linux/platform_device.h>
 #include <linux/kernel.h>
+#include <linux/kstrtox.h>
 #include <linux/mm.h>
 #include <linux/omapfb.h>
 
@@ -96,7 +97,7 @@ static ssize_t store_mirror(struct device *dev,
 	int r;
 	struct fb_var_screeninfo new_var;
 
-	r = strtobool(buf, &mirror);
+	r = kstrtobool(buf, &mirror);
 	if (r)
 		return r;