powerpc/boot: Change the WARN to INFO for boot wrapper overlap message

commit c55aef0e5bc6 ("powerpc/boot: Change the load address
for the wrapper to fit the kernel") introduced a WARNING to
inform the user that the uncompressed kernel would overlap
the boot uncompressing wrapper code. Change it to an INFO.

I initially thought, this would be a 'WARNING' for the those
boards, where the link_address should be fixed, so that the
user can take actions accordingly.

Changing the same to INFO.

Signed-off-by: Suzuki K. Poulose <suzuki@in.ibm.com>
Signed-off-by: Josh Boyer <jwboyer@gmail.com>

arch/powerpc/boot/wrapper

@@ -285,9 +285,9 @@ round_size=0x$(printf "%x" $round_size)
 link_addr=$(printf "%d" $link_address)
 
 if [ $link_addr -lt $strip_size ]; then
-    echo "WARN: Uncompressed kernel (size 0x$(printf "%x\n" $strip_size))" \
+    echo "INFO: Uncompressed kernel (size 0x$(printf "%x\n" $strip_size))" \
 		"overlaps the address of the wrapper($link_address)"
-    echo "WARN: Fixing the link_address of wrapper to ($round_size)"
+    echo "INFO: Fixing the link_address of wrapper to ($round_size)"
     link_address=$round_size
 fi