ti-extras: Add support for extra kernel/u-boot features for am62xx-lp

Add support for ti-extras for am62xx-lp to control the kernel and u-boot
repos, branches, and srcrevs via the TI_EXTRAS variable in the local.conf
file.

Signed-off-by: Paresh Bhagat <p-bhagat@ti.com>
Signed-off-by: Ryan Eatmon <reatmon@ti.com>

meta-ti-bsp/conf/machine/am62xx-lp-evm-k3r5.conf

@@ -3,6 +3,7 @@
 #@DESCRIPTION: Machine configuration for the TI AM62xx LP GP EVM (R5F core)
 
 require conf/machine/include/k3r5.inc
+require conf/machine/include/ti-extras.inc
 
 SYSFW_SOC = "am62x"
 SYSFW_CONFIG = "evm"

meta-ti-bsp/conf/machine/am62xx-lp-evm.conf

@@ -3,6 +3,7 @@
 #@DESCRIPTION: Machine configuration for the TI AM62XX LP EVM
 
 require conf/machine/include/am62xx.inc
+require conf/machine/include/ti-extras.inc
 
 KERNEL_DEVICETREE_PREFIX = " \
     ti/k3-am62-lp \