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-m68k/u-boot.h b/include/asm-m68k/u-boot.h
index 93a6959..5a0d5fe 100644
--- a/include/asm-m68k/u-boot.h
+++ b/include/asm-m68k/u-boot.h
@@ -38,7 +38,7 @@
 
 typedef struct bd_info {
 	unsigned long bi_memstart;	/* start of DRAM memory */
-	unsigned long bi_memsize;	/* size  of DRAM memory in bytes */
+	phys_size_t bi_memsize;		/* size  of DRAM memory in bytes */
 	unsigned long bi_flashstart;	/* start of FLASH memory */
 	unsigned long bi_flashsize;	/* size  of FLASH memory */
 	unsigned long bi_flashoffset;	/* reserved area for startup monitor */