Input: spear-keyboard - remove kbd_set_plat_data()

We must use platform_device_add_data() instead of kbd_set_plat_data() so
let's remove it.
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

arch/arm/plat-spear/include/plat/keyboard.h

@@ -159,11 +159,4 @@ struct kbd_platform_data {
 	unsigned int mode;
 };
 
-/* This function is used to set platform data field of pdev->dev */
-static inline void
-kbd_set_plat_data(struct platform_device *pdev, struct kbd_platform_data *data)
-{
-	pdev->dev.platform_data = data;
-}
-
 #endif /* __PLAT_KEYBOARD_H */