ext: simplelink: import HAL from TI CC13x2 / CC26x2 SDK

Add low level drivers (driverlib) and RF patches from the TI CC13x2 and
CC26x2 SDK. These sources have been added unmodified with the exception
of converting DOS to UNIX line endings.

The majority of these APIs are available in ROM and inclusion of the
headers will map functions that are not inline to the ROM versions.

Origin: Texas Instruments SimpleLink CC13x2 and CC26x2 SDK
License: BSD 3-Clause
URL: http://www.ti.com/tool/simplelink-cc13x2-26x2-sdk
Purpose: Provides HAL for TI CC13x2 and CC26x2 SoCs
Maintained-by: External

Signed-off-by: Brett Witherspoon <spoonb@cdspooner.com>
diff --git a/ext/hal/ti/simplelink/Kconfig b/ext/hal/ti/simplelink/Kconfig
index adc48f3..57b35e4 100644
--- a/ext/hal/ti/simplelink/Kconfig
+++ b/ext/hal/ti/simplelink/Kconfig
@@ -23,3 +23,8 @@
 config HAS_MSP432P4XXSDK
         select HAS_CMSIS
+# Kconfig - CC13X2 / CC26X2 SDK HAL configuration
+config HAS_CC13X2_CC26X2_SDK
+	bool