hw/bsp: Use common startup in STM32F0 boards

This
- switches to use autogenerated linker script
- removes .cmd files
- removes local versions of startup code

Signed-off-by: Jerzy Kasenberg <jerzy.kasenberg@codecoup.pl>

hw/bsp/nucleo-f030r8/bsp.yml

@@ -22,13 +22,9 @@ bsp.url: https://www.st.com/en/evaluation-tools/nucleo-f030r8.html
 bsp.maker: "STMicroelectronics"
 bsp.arch: cortex_m0
 bsp.compiler: compiler/arm-none-eabi-m0
-bsp.linkerscript:
-    - "hw/bsp/nucleo-f030r8/nucleo-f030r8.ld"
-    - "@apache-mynewt-core/hw/mcu/stm/stm32f0xx/stm32f0xx.ld"
+bsp.linkerscript: autogenerated
 bsp.downloadscript: "hw/bsp/nucleo-f030r8/nucleo-f030r8_download.sh"
 bsp.debugscript: "hw/bsp/nucleo-f030r8/nucleo-f030r8_debug.sh"
-bsp.downloadscript.WINDOWS.OVERWRITE: "hw/bsp/nucleo-f030r8/nucleo-f030r8_download.cmd"
-bsp.debugscript.WINDOWS.OVERWRITE: "hw/bsp/nucleo-f030r8/nucleo-f030r8_debug.cmd"
 
 bsp.flash_map:
     areas:

hw/bsp/nucleo-f030r8/pkg.yml

@@ -36,3 +36,4 @@ pkg.cflags.HARDFLOAT:
 pkg.deps:
     - "@apache-mynewt-core/hw/mcu/stm/stm32f0xx"
     - "@apache-mynewt-core/libc"
+    - "@apache-mynewt-core/boot/startup"