dm646x: add new configuration for dm6467T

add new configuration file for dm6467T and appropraite changes
in boards.cfg. dm6467T is the new varaiant of dm6467 SOC which
supports 33 MHz reference clock where as dm6467 supports 27 MHz
reference clock.

Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
diff --git a/boards.cfg b/boards.cfg
index 8b7a03b..88be71b 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -130,6 +130,7 @@
 davinci_dm355leopard         arm         arm926ejs   dm355leopard        davinci        davinci
 davinci_dm365evm             arm         arm926ejs   dm365evm            davinci        davinci
 davinci_dm6467evm            arm         arm926ejs   dm6467evm           davinci        davinci
+davinci_dm6467Tevm           arm         arm926ejs   dm6467evm           davinci        davinci
 davinci_dvevm                arm         arm926ejs   dvevm               davinci        davinci
 davinci_schmoogie            arm         arm926ejs   schmoogie           davinci        davinci
 davinci_sffsdr               arm         arm926ejs   sffsdr              davinci        davinci