device: Const-ify all device driver instance pointers

Now that device_api attribute is unmodified at runtime, as well as all
the other attributes, it is possible to switch all device driver
instance to be constant.

A coccinelle rule is used for this:

@r_const_dev_1
  disable optional_qualifier
@
@@
-struct device *
+const struct device *

@r_const_dev_2
 disable optional_qualifier
@
@@
-struct device * const
+const struct device *

Fixes #27399

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>

drivers/modem/modem_receiver.h

@@ -22,7 +22,7 @@ extern "C" {
 #endif
 
 struct mdm_receiver_context {
-	struct device *uart_dev;
+	const struct device *uart_dev;
 
 	/* rx data */
 	struct ring_buf rx_rb;