pinctrl: implement PINMUX_MAP_SYS_HOG

This is the same as PINMUX_MAP_PRIMARY_SYS_HOG, except that it allows
you to specify a particular control device.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

include/linux/pinctrl/machine.h

@@ -65,6 +65,14 @@ struct pinmux_map {
 #define PINMUX_MAP_SYS(a, b, c) \
 	{ .name = a, .ctrl_dev_name = b, .function = c }
 
+/*
+ * Convenience macro to map a system function onto a certain pinctrl device,
+ * to be hogged by the pinmux core until the system shuts down.
+ */
+#define PINMUX_MAP_SYS_HOG(a, b, c) \
+	{ .name = a, .ctrl_dev_name = b, .function = c, \
+	  .hog_on_boot = true }
+
 /*
  * Convenience macro to map a function onto the primary device pinctrl device
  * this is especially helpful on systems that have only one pin controller