[PATCH] board: iot2050: update build documentation for OP-TEE

[Ivan Mikhaylov]

From: Ivan Mikhaylov <ivan.mikhaylov at siemens.com>

Set ta-target explicitly to correspond with OP-TEE recipe in
siemens/meta-iot2050.

Errors without explicit set of ta-target:
aarch64-linux-gnu-gcc: error: unrecognized command-line option ‘-mthumb’
aarch64-linux-gnu-gcc: error: unrecognized command-line option ‘-mno-unaligned-access’
aarch64-linux-gnu-gcc: error: unrecognized command-line option ‘-mfloat-abi=hard’
make: *** [mk/compile.mk:159: out/arm-plat-k3/ta_arm32-lib/libdl/dlfcn.o] Error 1

Signed-off-by: Ivan Mikhaylov <ivan.mikhaylov at siemens.com>
---
 doc/board/siemens/iot2050.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/board/siemens/iot2050.rst b/doc/board/siemens/iot2050.rst
index 592c59be03..7e97f817ce 100644
--- a/doc/board/siemens/iot2050.rst
+++ b/doc/board/siemens/iot2050.rst
@@ -49,7 +49,7 @@ OP-TEE:
 
 .. code-block:: text
 
- $ make PLATFORM=k3-am65x CFG_ARM64_core=y CFG_TEE_CORE_LOG_LEVEL=2 CFG_CONSOLE_UART=1
+ $ make PLATFORM=k3-am65x CFG_ARM64_core=y CFG_TEE_CORE_LOG_LEVEL=2 CFG_CONSOLE_UART=1 CFG_USER_TA_TARGETS="ta_arm64"
 
 U-Boot:
 
-- 
2.34.0