lmb: add lmb_is_reserved_flags

Add a new function lmb_is_reserved_flags to check if
an address is reserved with a specific flags.

This function can be used to check if an address was
reserved with no-map flags with:

lmb_is_reserved_flags(lmb, addr, LMB_NOMAP);

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
diff --git a/include/lmb.h b/include/lmb.h
index e900b3d..3c4afdf 100644
--- a/include/lmb.h
+++ b/include/lmb.h
@@ -100,6 +100,15 @@
 				  phys_size_t size);
 extern phys_size_t lmb_get_free_size(struct lmb *lmb, phys_addr_t addr);
 extern int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr);
+/**
+ * lmb_is_reserved_flags - test if tha address is in reserved region with a bitfield flag
+ *
+ * @lmb		the logical memory block struct
+ * @addr	address to be tested
+ * @flags	flags bitfied to be tested
+ * @return 0 if not reserved or reserved without the requested flag else 1
+ */
+int lmb_is_reserved_flags(struct lmb *lmb, phys_addr_t addr, int flags);
 extern long lmb_free(struct lmb *lmb, phys_addr_t base, phys_size_t size);
 
 extern void lmb_dump_all(struct lmb *lmb);