sh: make the linker scripts more generic

currently we need to sync the linker script enty and TEXT_BASE manualy
and the reloc_dst is based on it

instead provide it now from the ldflags

tested on r2dplus

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

board/ms7722se/u-boot.lds

@@ -28,18 +28,9 @@ ENTRY(_start)
 SECTIONS
 {
 	/*
-	   Base address of internal SDRAM is 0x0C000000.
-	   Although size of SDRAM can be either 16 or 32 MBytes,
-	   we assume 16 MBytes (ie ignore upper half if the full
-	   32 MBytes is present).
-
-	   NOTE: This address must match with the definition of
-	   TEXT_BASE in config.mk (in this directory).
-
-	*/
-	. = 0x8C000000 + (64*1024*1024) - (256*1024);
-
-	PROVIDE (reloc_dst = .);
+	 * entry and reloct_dst will be provided via ldflags
+	 */
+	. = .;
 
 	PROVIDE (_ftext = .);
 	PROVIDE (_fcode = .);