[ARM] 3503/1: Fix map_desc structure for aaec2000

Patch from Bellido Nicolas

Patch:
 [ARM] 2982/1: Replace map_desc.physical with map_desc.pfn: aaec2000
incorrectly expanded the struct map_desc for aaec2000.

Signed-off-by: Nicolas Bellido <ml@acolin.be>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>