ti: common: board_detect: Replace hardcoded value with macro

We should have used TI_DEAD_EEPROM_MAGIC in the first place.

Fixes: d3b98a9eb9 ("ti: common: dra7: Add standard access for board description EEPROM")
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

board/ti/common/board_detect.c

@@ -171,7 +171,7 @@ int __maybe_unused ti_i2c_eeprom_dra7_get(int bus_addr, int dev_addr)
 		goto already_read;
 
 	/* Initialize with a known bad marker for i2c fails.. */
-	ep->header = 0xADEAD12C;
+	ep->header = TI_DEAD_EEPROM_MAGIC;
 	ep->name[0] = 0x0;
 	ep->version[0] = 0x0;
 	ep->serial[0] = 0x0;