sh: Remove config.mk for sh7785lcr board

Move CONFIG_SYS_TEXT_BASE to the board's config file, and remove the
unnecessary config.mk file.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/include/configs/sh7785lcr.h b/include/configs/sh7785lcr.h
index a95a759..8eb9a12 100644
--- a/include/configs/sh7785lcr.h
+++ b/include/configs/sh7785lcr.h
@@ -63,6 +63,7 @@
 
 /* MEMORY */
 #if defined(CONFIG_SH_32BIT)
+#define CONFIG_SYS_TEXT_BASE		0x8FF80000
 /* 0x40000000 - 0x47FFFFFF does not use */
 #define CONFIG_SH_SDRAM_OFFSET		(0x8000000)
 #define SH7785LCR_SDRAM_PHYS_BASE	(0x40000000 + CONFIG_SH_SDRAM_OFFSET)
@@ -72,6 +73,7 @@
 #define SH7785LCR_FLASH_BANK_SIZE	(64 * 1024 * 1024)
 #define SH7785LCR_USB_BASE		(0xa6000000)
 #else
+#define CONFIG_SYS_TEXT_BASE		0x0FF80000
 #define SH7785LCR_SDRAM_BASE		(0x08000000)
 #define SH7785LCR_SDRAM_SIZE		(128 * 1024 * 1024)
 #define SH7785LCR_FLASH_BASE_1		(0xa0000000)