Change initdram() return type to phys_size_t

This patch changes the return type of initdram() from long int to phys_size_t.
This is required for a couple of reasons: long int limits the amount of dram
to 2GB, and u-boot in general is moving over to phys_size_t to represent the
size of physical memory.  phys_size_t is defined as an unsigned long on almost
all current platforms.

This patch *only* changes the return type of the initdram function (in
include/common.h, as well as in each board's implementation of initdram).  It
does not actually modify the code inside the function on any of the platforms;
platforms which wish to support more than 2GB of DRAM will need to modify
their initdram() function code.

Build tested with MAKEALL for ppc, arm, mips, mips-el. Booted on powerpc
MPC8641HPCN.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
diff --git a/board/tqc/tqm5200/tqm5200.c b/board/tqc/tqm5200/tqm5200.c
index f9891db..8b8e461 100644
--- a/board/tqc/tqm5200/tqm5200.c
+++ b/board/tqc/tqm5200/tqm5200.c
@@ -104,7 +104,7 @@
  *	      is something else than 0x00000000.
  */
 
-long int initdram (int board_type)
+phys_size_t initdram (int board_type)
 {
 	ulong dramsize = 0;
 	ulong dramsize2 = 0;
diff --git a/board/tqc/tqm8260/tqm8260.c b/board/tqc/tqm8260/tqm8260.c
index 736c410..f201045 100644
--- a/board/tqc/tqm8260/tqm8260.c
+++ b/board/tqc/tqm8260/tqm8260.c
@@ -283,7 +283,7 @@
 	return (size);
 }
 
-long int initdram (int board_type)
+phys_size_t initdram (int board_type)
 {
 	volatile immap_t *immap = (immap_t *) CFG_IMMR;
 	volatile memctl8260_t *memctl = &immap->im_memctl;
diff --git a/board/tqc/tqm8272/tqm8272.c b/board/tqc/tqm8272/tqm8272.c
index ec1a37c..29099f5 100644
--- a/board/tqc/tqm8272/tqm8272.c
+++ b/board/tqc/tqm8272/tqm8272.c
@@ -555,7 +555,7 @@
 	return (size);
 }
 
-long int initdram (int board_type)
+phys_size_t initdram (int board_type)
 {
 	volatile immap_t *immap = (immap_t *) CFG_IMMR;
 	volatile memctl8260_t *memctl = &immap->im_memctl;
diff --git a/board/tqc/tqm834x/tqm834x.c b/board/tqc/tqm834x/tqm834x.c
index aea985c..278780d 100644
--- a/board/tqc/tqm834x/tqm834x.c
+++ b/board/tqc/tqm834x/tqm834x.c
@@ -85,7 +85,7 @@
 /**************************************************************************
  * DRAM initalization and size detection
  */
-long int initdram (int board_type)
+phys_size_t initdram (int board_type)
 {
 	long bank_size;
 	long size;
diff --git a/board/tqc/tqm85xx/sdram.c b/board/tqc/tqm85xx/sdram.c
index 442ff66..33bc407 100644
--- a/board/tqc/tqm85xx/sdram.c
+++ b/board/tqc/tqm85xx/sdram.c
@@ -286,7 +286,7 @@
 	}
 }
 
-long int initdram (int board_type)
+phys_size_t initdram (int board_type)
 {
 	long dram_size = 0;
 	int casl;
diff --git a/board/tqc/tqm8xx/tqm8xx.c b/board/tqc/tqm8xx/tqm8xx.c
index 18bf2a8..96b6103 100644
--- a/board/tqc/tqm8xx/tqm8xx.c
+++ b/board/tqc/tqm8xx/tqm8xx.c
@@ -139,7 +139,7 @@
 
 /* ------------------------------------------------------------------------- */
 
-long int initdram (int board_type)
+phys_size_t initdram (int board_type)
 {
 	volatile immap_t *immap = (immap_t *) CFG_IMMR;
 	volatile memctl8xx_t *memctl = &immap->im_memctl;