boards/esp32[c3|c6|h2|s2|s3]: Ignore etctmp in common board

Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
diff --git a/boards/risc-v/esp32c3/common/.gitignore b/boards/risc-v/esp32c3/common/.gitignore
new file mode 100644
index 0000000..cc92d18
--- /dev/null
+++ b/boards/risc-v/esp32c3/common/.gitignore
@@ -0,0 +1,2 @@
+etctmp
+etctmp.c
diff --git a/boards/risc-v/esp32c6/common/.gitignore b/boards/risc-v/esp32c6/common/.gitignore
new file mode 100644
index 0000000..cc92d18
--- /dev/null
+++ b/boards/risc-v/esp32c6/common/.gitignore
@@ -0,0 +1,2 @@
+etctmp
+etctmp.c
diff --git a/boards/risc-v/esp32h2/common/.gitignore b/boards/risc-v/esp32h2/common/.gitignore
new file mode 100644
index 0000000..cc92d18
--- /dev/null
+++ b/boards/risc-v/esp32h2/common/.gitignore
@@ -0,0 +1,2 @@
+etctmp
+etctmp.c
diff --git a/boards/xtensa/esp32/common/.gitignore b/boards/xtensa/esp32/common/.gitignore
new file mode 100644
index 0000000..cc92d18
--- /dev/null
+++ b/boards/xtensa/esp32/common/.gitignore
@@ -0,0 +1,2 @@
+etctmp
+etctmp.c
diff --git a/boards/xtensa/esp32s2/common/.gitignore b/boards/xtensa/esp32s2/common/.gitignore
new file mode 100644
index 0000000..cc92d18
--- /dev/null
+++ b/boards/xtensa/esp32s2/common/.gitignore
@@ -0,0 +1,2 @@
+etctmp
+etctmp.c
diff --git a/boards/xtensa/esp32s3/common/.gitignore b/boards/xtensa/esp32s3/common/.gitignore
new file mode 100644
index 0000000..cc92d18
--- /dev/null
+++ b/boards/xtensa/esp32s3/common/.gitignore
@@ -0,0 +1,2 @@
+etctmp
+etctmp.c