add cmake for pi zero (renamed from pi zero_w), build but the flash size seem wrong (only 24 bytes for text)

hw/bsp/broadcom_32bit/boards/raspberrypi_zero/board.cmake

@@ -0,0 +1,8 @@
+set(CMAKE_SYSTEM_PROCESSOR arm1176jzf-s CACHE INTERNAL "System Processor")
+#set(SUFFIX "")
+
+function(update_board TARGET)
+  target_compile_definitions(${TARGET} PUBLIC
+    BCM_VERSION=2835
+    )
+endfunction()

hw/bsp/broadcom_32bit/boards/raspberrypi_zero/board.h

@@ -0,0 +1,38 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020, Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */

hw/bsp/broadcom_32bit/boards/raspberrypi_zero/board.mk

@@ -0,0 +1,5 @@
+CPU_CORE = arm1176jzf-s
+CFLAGS += -DBCM_VERSION=2835 \
+          -DCFG_TUSB_MCU=OPT_MCU_BCM2835
+
+SUFFIX =