GDB: minimal configuration for stm32mp machine support

recipes-devtools/gdb/files/gdbinit

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+target remote :3333
+set arm fallback-mode thumb
+monitor reset
+monitor halt

recipes-devtools/gdb/gdb-cross-canadian_%.bbappend

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+FILESEXTRAPATHS_prepend_stm32mpcommon := "${THISDIR}/files:"
+
+#Add scripts for gdb/openocd/eclipse
+SRC_URI_append_stm32mpcommon += " \
+    file://gdbinit \
+"
+
+# Ref to yocto default conf at:
+# openembedded-core/meta/recipes-devtools/gdb/gdb-common.inc
+# We force activation of tui for the "layout" command.
+EXTRA_OECONF_append_stm32mpcommon = " \
+    --enable-tui \
+"
+
+do_install_append_stm32mpcommon() {
+   install -d ${D}/${bindir}/
+   cp -a ${WORKDIR}/gdbinit ${D}/${bindir}/
+}
+

recipes-devtools/gdb/gdb-cross_%.bbappend

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+FILESEXTRAPATHS_prepend_stm32mpcommon := "${THISDIR}/files:"
+
+#Add scripts for gdb/openocd/eclipse
+SRC_URI_append_stm32mpcommon += " \
+    file://gdbinit \
+"
+
+# Ref to yocto default conf at:
+# openembedded-core/meta/recipes-devtools/gdb/gdb-common.inc
+# We force activation of tui for the "layout" command.
+EXTRA_OECONF_append_stm32mpcommon = " \
+    --enable-tui \
+"
+
+do_install_append_stm32mpcommon() {
+   install -d ${D}/${bindir}/
+   cp -a ${WORKDIR}/gdbinit ${D}/${bindir}/
+}
+