u-boot: update to 2020.01-rc3 pre-release and drop py2 dependencies

(From OE-Core rev: 8c164bb34b777db2cc3ed723d8397ce6fa040aac)

Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-bsp/u-boot/u-boot-common.inc

@@ -10,9 +10,12 @@ LICENSE = "GPLv2+"
 LIC_FILES_CHKSUM = "file://Licenses/README;md5=30503fd321432fc713238f582193b78e"
 PE = "1"
 
+# Drop this line when updating to 2020.01 final
+PV = "2020.01~rc3"
+
 # We use the revision in order to avoid having to fetch it from the
 # repo during parse
-SRCREV = "61ba1244b548463dbfb3c5285b6b22e7c772c5bd"
+SRCREV = "d4a31e8ee5592072d8d5208b3e950cba2d89b6bd"
 
 SRC_URI = "git://git.denx.de/u-boot.git \
           "

meta/recipes-bsp/u-boot/u-boot.inc

@@ -7,13 +7,13 @@ PACKAGE_ARCH = "${MACHINE_ARCH}"
 
 DEPENDS += "kern-tools-native"
 
-inherit uboot-config uboot-extlinux-config uboot-sign deploy cml1
+inherit uboot-config uboot-extlinux-config uboot-sign deploy cml1 python3native
 
-DEPENDS += "swig-native python-native"
+DEPENDS += "swig-native"
 
 EXTRA_OEMAKE = 'CROSS_COMPILE=${TARGET_PREFIX} CC="${TARGET_PREFIX}gcc ${TOOLCHAIN_OPTIONS}" V=1'
 EXTRA_OEMAKE += 'HOSTCC="${BUILD_CC} ${BUILD_CFLAGS} ${BUILD_LDFLAGS}"'
-EXTRA_OEMAKE += 'PYTHON2=nativepython STAGING_INCDIR=${STAGING_INCDIR_NATIVE} STAGING_LIBDIR=${STAGING_LIBDIR_NATIVE}'
+EXTRA_OEMAKE += 'STAGING_INCDIR=${STAGING_INCDIR_NATIVE} STAGING_LIBDIR=${STAGING_LIBDIR_NATIVE}'
 
 PACKAGECONFIG ??= "openssl"
 # u-boot will compile its own tools during the build, with specific