lv-lib-png: Add recipe for LVGL for handling PNG format

Note that this lib will be part of next lvgl release,
meanwhile we build it without touching lvgl default config.

Relate-to: https://git.ostc-eu.org/OSTC/planning/core-os/-/issues/233
Relate-to: https://github.com/lvgl/lvgl/issues/2534
Forwarded: https://github.com/openembedded/meta-openembedded/pull/454
Change-Id: I2e467caae8e70577e5c9a93f92efc6588cf3bfa2
Origin: https://github.com/openembedded/meta-openembedded/pull/454/commits/e8b0d89df2219c7d0cff6f4dfcbe4dd29033652e


Signed-off-by: Philippe Coval <philippe.coval@huawei.com>

meta-oniro-staging/recipes-graphics/lvgl/lv-lib-png_8.0.2.bb

+# SPDX-FileCopyrightText: Huawei Inc.
+# SPDX-License-Identifier: MIT
+
+src_org = "lvgl"
+SRC_URI = "gitsm://github.com/${src_org}/lv_lib_png;destsuffix=${S};protocol=https;nobranch=1"
+SRCREV = "bf1531afe07c9f861107559e29ab8a2d83e4715a"
+
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "file://LICENSE;md5=d6fc0df890c5270ef045981b516bb8f2"
+
+HOMEPAGE = "https://docs.lvgl.io"
+SUMMARY = "PNG decoder for LVGL"
+DESCRIPTION = "Allow the use of PNG images in LVGL. This implementation uses lodepng"
+
+DEPENDS += "lvgl"
+
+inherit cmake
+
+TARGET_CFLAGS += "-DLV_CONF_INCLUDE_SIMPLE=1"
+TARGET_CFLAGS += "-I${RECIPE_SYSROOT}/${includedir}/lvgl"
+
+FILES:${PN}-dev = "\
+    ${includedir}/lvgl/lv_lib_png/ \
+    "
+
+FILES:${PN}-staticdev = "${libdir}/"