[Buildroot] [git commit branch/next] boot/optee-os: add support to build with python-pillow

[Thomas Petazzoni]

commit: https://git.buildroot.net/buildroot/commit/?id=edfa431c9b7b53dbbb3063bd5efd88aac84b1c6e
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/next

Some specific versions of OP-TEE need the python-pillow module on the
host to build support for the TUI (Trusted User Interface) feature.

To allow building such OP-TEE versions, this commit adds the option
BR2_TARGET_OPTEE_OS_NEEDS_PYTHON_PILLOW which when enabled ensures
that host-python-pillow is built before OP-TEE.

Signed-off-by: Kory Maincent <kory.maincent at bootlin.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
---
 boot/optee-os/Config.in   | 7 +++++++
 boot/optee-os/optee-os.mk | 4 ++++
 2 files changed, 11 insertions(+)

diff --git a/boot/optee-os/Config.in b/boot/optee-os/Config.in
index fb8a189a75..0be6e68b0c 100644
--- a/boot/optee-os/Config.in
+++ b/boot/optee-os/Config.in
@@ -72,6 +72,13 @@ config BR2_TARGET_OPTEE_OS_NEEDS_PYTHON_CRYPTOGRAPHY
 	  python-cryptography. Select this option if optee-os needs
 	  python-cryptography to be built.
 
+config BR2_TARGET_OPTEE_OS_NEEDS_PYTHON_PILLOW
+	bool "OP-TEE OS needs host-python-pillow"
+	help
+	  Some specific OP-TEE OS versions may use python-pillow to
+	  build the Trusted User Interface feature.  Select this
+	  option if optee-os need python-pillow to be built.
+
 config BR2_TARGET_OPTEE_OS_CORE
 	bool "Build core"
 	default y
diff --git a/boot/optee-os/optee-os.mk b/boot/optee-os/optee-os.mk
index 5313a1badc..88f14b48e4 100644
--- a/boot/optee-os/optee-os.mk
+++ b/boot/optee-os/optee-os.mk
@@ -29,6 +29,10 @@ else
 OPTEE_OS_DEPENDENCIES += host-python-pycryptodomex
 endif
 
+ifeq ($(BR2_TARGET_OPTEE_OS_NEEDS_PYTHON_PILLOW),y)
+OPTEE_OS_DEPENDENCIES += host-python-pillow
+endif
+
 ifeq ($(BR2_TARGET_OPTEE_OS_NEEDS_DTC),y)
 OPTEE_OS_DEPENDENCIES += host-dtc
 endif