drivers: tee: broadcom: add optee based bnxt fw load driver

Add optee based bnxt fw load driver.
bnxt is Broadcom NetXtreme controller Ethernet card.
This driver is used to load bnxt firmware binary using OpTEE.

Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/tee/broadcom/Kconfig b/drivers/tee/broadcom/Kconfig
new file mode 100644
index 0000000..ce95072
--- /dev/null
+++ b/drivers/tee/broadcom/Kconfig
@@ -0,0 +1,7 @@
+config CHIMP_OPTEE
+	bool "Enable secure ChiMP firmware loading"
+	depends on OPTEE
+	default y
+	help
+	  This driver is used to load bnxt firmware binary using OpTEE.
+	  bnxt is Broadcom NetXtreme controller Ethernet card.