Blackfin arch: add defines for the on-chip L1 ROM of BF54x

Should not need separate cplb entry though as we cover L1 with a 4 meg page
Signed-off-by: NMike Frysinger <michael.frysinger@analog.com>
Signed-off-by: NBryan Wu <bryan.wu@analog.com>

include/asm-blackfin/mach-bf548/mem_map.h

@@ -49,6 +49,11 @@
 #define BOOT_ROM_START		0xEF000000
 #define BOOT_ROM_LENGTH		0x1000
 
+/* L1 Instruction ROM */
+
+#define L1_ROM_START		0xFFA14000
+#define L1_ROM_LENGTH		0x10000
+
 /* Level 1 Memory */
 
 /* Memory Map for ADSP-BF548 processors */