am33xx/omap: Add a new board to enable verified boot

Enable verified boot functionality for a new am335x_boneblack_vboot target.

Signed-off-by: Simon Glass <sjg@chromium.org>

boards.cfg

@@ -262,6 +262,7 @@ Active  arm         armv7          am33xx      siemens         pxm2
 Active  arm         armv7          am33xx      siemens         rut                 rut                                   -                                                                                                                                 Roger Meier <r.meier@siemens.com>
 Active  arm         armv7          am33xx      silica          pengwyn             pengwyn                               -                                                                                                                                 Lothar Felten <lothar.felten@gmail.com>
 Active  arm         armv7          am33xx      ti              am335x              am335x_boneblack                      am335x_evm:SERIAL1,CONS_INDEX=1,EMMC_BOOT                                                                                         Tom Rini <trini@ti.com>
+Active  arm         armv7          am33xx      ti              am335x              am335x_boneblack_vboot                am335x_evm:SERIAL1,CONS_INDEX=1,EMMC_BOOT,ENABLE_VBOOT                                                                            Tom Rini <trini@ti.com>
 Active  arm         armv7          am33xx      ti              am335x              am335x_evm                            am335x_evm:SERIAL1,CONS_INDEX=1,NAND                                                                                              Tom Rini <trini@ti.com>
 Active  arm         armv7          am33xx      ti              am335x              am335x_evm_nor                        am335x_evm:SERIAL1,CONS_INDEX=1,NAND,NOR                                                                                          Tom Rini <trini@ti.com>
 Active  arm         armv7          am33xx      ti              am335x              am335x_evm_norboot                    am335x_evm:SERIAL1,CONS_INDEX=1,NOR,NOR_BOOT                                                                                      Tom Rini <trini@ti.com>

include/configs/am335x_evm.h

@@ -25,6 +25,10 @@
 # define CONFIG_OF_CONTROL
 # define CONFIG_OF_SEPARATE
 # define CONFIG_DEFAULT_DEVICE_TREE am335x-boneblack
+# ifdef CONFIG_ENABLE_VBOOT
+#  define CONFIG_FIT_SIGNATURE
+#  define CONFIG_RSA
+# endif
 #endif
 
 #define CONFIG_SYS_BOOTM_LEN		(16 << 20)