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-blackfin/global_data.h b/include/asm-blackfin/global_data.h
index 4c88639..b0b01e4 100644
--- a/include/asm-blackfin/global_data.h
+++ b/include/asm-blackfin/global_data.h
@@ -43,7 +43,7 @@
 	unsigned long board_type;
 	unsigned long baudrate;
 	unsigned long have_console;	/* serial_init() was called */
-	unsigned long ram_size;	/* RAM size */
+	phys_size_t ram_size;		/* RAM size */
 	unsigned long reloc_off;	/* Relocation Offset */
 	unsigned long env_addr;	/* Address  of Environment struct */
 	unsigned long env_valid;	/* Checksum of Environment valid? */