Change bd/gd memsize/ram_size to be phys_size_t.

Currently, both are defined as an unsigned long, but
should be phys_size_t. This should result in no real change,
since phys_size_t is currently an unsigned long for all the
default configs.  Also add print_lnum to cmd_bdinfo to deal
with the potentially wider memsize.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
diff --git a/include/asm-i386/global_data.h b/include/asm-i386/global_data.h
index 3235063..5dfb595 100644
--- a/include/asm-i386/global_data.h
+++ b/include/asm-i386/global_data.h
@@ -43,7 +43,7 @@
 	unsigned long	env_valid;	/* Checksum of Environment valid? */
 	unsigned long	cpu_clk;	/* CPU clock in Hz!		*/
 	unsigned long	bus_clk;
-	unsigned long	ram_size;	/* RAM size */
+	phys_size_t	ram_size;	/* RAM size */
 	unsigned long	reset_status;	/* reset status register at boot */
 	void		**jt;		/* jump table */
 } gd_t;