Blackfin: unify u-boot linker scripts

All the Blackfin linker scripts were duplicated across the board dirs with
no difference save from the semi-often used ENV_IS_EMBEDDED option.  So
unify all of them in the lib_blackfin/ dir and for the few boards that
need to embedded the environment directly, add a LDS_BOARD_TEXT define for
them to customize via their board config file.  This is much simpler than
forcing them to duplicate the rest of the linker script.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/include/configs/bf537-pnav.h b/include/configs/bf537-pnav.h
index c8a59ab..284c7fc 100644
--- a/include/configs/bf537-pnav.h
+++ b/include/configs/bf537-pnav.h
@@ -105,6 +105,21 @@
 #endif
 #define CONFIG_ENV_SIZE		0x1000
 #define CONFIG_ENV_SECT_SIZE	0x2000
+#ifdef ENV_IS_EMBEDDED
+/* WARNING - the following is hand-optimized to fit within
+ * the sector before the environment sector. If it throws
+ * an error during compilation remove an object here to get
+ * it linked after the configuration sector.
+ */
+# define LDS_BOARD_TEXT \
+	cpu/blackfin/traps.o		(.text .text.*); \
+	cpu/blackfin/interrupt.o	(.text .text.*); \
+	cpu/blackfin/serial.o		(.text .text.*); \
+	common/dlmalloc.o		(.text .text.*); \
+	lib_generic/crc32.o		(.text .text.*); \
+	. = DEFINED(env_offset) ? env_offset : .; \
+	common/env_embedded.o		(.text .text.*);
+#endif
 
 
 /*