optee: Revert "optee: update optee components to 3.20 tag"

This reverts commit 9a007a3fea.

We ran into some build failures on the older legacy platforms due
to this change and so are reverting this while we investigate.

recipes-security/optee/optee-client_%.bbappend

@@ -1,7 +1,4 @@
-PV_ti-soc = "3.20.0+git${SRCPV}"
-SRCREV_ti-soc = "dd2d39b49975d2ada7870fe2b7f5a84d0d3860dc"
+PV_ti-soc = "3.19.0+git${SRCPV}"
+SRCREV_ti-soc = "140bf463046071d3ca5ebbde3fb21ee0854e1951"
 
-inherit pkgconfig
-DEPENDS_append_ti-soc = "util-linux"
-
-EXTRA_OEMAKE_append_k3 = " PKG_CONFIG=pkg-config"
+DEPENDS_append_ti-soc = "pkgconfig util-linux"

recipes-security/optee/optee-examples_%.bbappend

@@ -1,5 +1,5 @@
-PV_ti-soc = "3.20.0+git${SRCPV}"
-SRCREV_ti-soc = "a98d01e1b9168eaed96bcd0bac0df67c44a81081"
+PV_ti-soc = "3.19.0+git${SRCPV}"
+SRCREV_ti-soc = "f301ee9df2129c0db683e726c91dc2cefe4cdb65"
 SRC_URI_ti-soc = "git://github.com/linaro-swg/optee_examples.git;protocol=https"
 
 DEPENDS_append_ti-soc = " python3-cryptography-native"

recipes-security/optee/optee-os_%.bbappend

@@ -1,5 +1,5 @@
-PV_ti-soc = "3.20.0+git${SRCPV}"
-SRCREV_ti-soc = "3bc3809afe372ca7e8216fc5d7a64e965bb4ad70"
+PV_ti-soc = "3.19.0+git${SRCPV}"
+SRCREV_ti-soc = "d6c5d0037b46f46caf71d67d7825d4b722cbcddf"
 SRC_URI_ti-soc = "git://github.com/OP-TEE/optee_os.git;protocol=https"
 
 DEPENDS_append_ti-soc = " python3-cryptography-native"