Fix LMB type issues

The LMB code now uses phys_addr_t and phys_size_t.  Also, there were a couple
of casting problems in the bootm code that called the LMB functions.

Signed-off-by: Andy Fleming <afleming@freescale.com>

include/lmb.h

diff --git a/include/lmb.h b/include/lmb.h
index 0283075..14e8727 100644
--- a/include/lmb.h
+++ b/include/lmb.h
@@ -43,7 +43,7 @@
 extern phys_addr_t __lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align,
 			      phys_addr_t max_addr);
 extern int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr);
-extern long lmb_free(struct lmb *lmb, u64 base, u64 size);
+extern long lmb_free(struct lmb *lmb, phys_addr_t base, phys_size_t size);
 
 extern void lmb_dump_all(struct lmb *lmb);