board/zinger: Disable CONFIG_DEBUG_PRINTF
We're getting low on RO flash space, so disable CONFIG_DEBUG_PRINTF to
free up more space.
BRANCH=none
TEST=make buildall
#undef CONFIG_WATCHDOG_PERIOD_MS
#define CONFIG_WATCHDOG_PERIOD_MS 2300
-/* debug printf flash footprinf is about 1400 bytes */
-#define CONFIG_DEBUG_PRINTF
+/* debug printf flash footprint is about 1400 bytes */
+#undef CONFIG_DEBUG_PRINTF
#define UARTN CONFIG_UART_CONSOLE
#define UARTN_BASE STM32_USART_BASE(CONFIG_UART_CONSOLE)
