remoteproc: add page lookup for TI PRU to ELF loader

This adds a special handler to the default remoteproc ELF firmware
loader that looks up the memory page on TI PRU firmware files.

These processors have multiple memory maps that share the same address
space, so we need to know the page in addition to the physical address
in order to translate the address to a local CPU address.

Signed-off-by: David Lechner <[email protected]>

Author: dlech

include/linux/skbuff.h

@@ -890,7 +890,7 @@ struct sk_buff {
 	 * want to keep them across layers you have to do a skb_clone()
 	 * first. This is owned by whoever has the skb queued ATM.
 	 */
-	char			cb[48] __aligned(8);
+	char			cb[64] __aligned(8);
 
 	union {
 		struct {