Fix some new warnings found in build testing.

arch/arm/src/cxd56xx/cxd56_rtc.c

@@ -48,6 +48,7 @@
 #include <nuttx/irq.h>
 #include <nuttx/arch.h>
 #include <nuttx/wdog.h>
+#include <nuttx/clock.h>
 
 #include <arch/board/board.h>
 

arch/arm/src/lpc17xx/lpc17_lowputc.c

@@ -86,6 +86,11 @@
 #  define CONSOLE_2STOP    CONFIG_UART3_2STOP
 #elif defined(HAVE_CONSOLE)
 #  error "No CONFIG_UARTn_SERIAL_CONSOLE Setting"
+#  define CONSOLE_BASE     LPC17_UART0_BASE
+#  define CONSOLE_BAUD     115200
+#  define CONSOLE_BITS     8
+#  define CONSOLE_PARITY   0
+#  define CONSOLE_2STOP    0
 #endif
 
 /* Get word length setting for the console */

tools/nxstyle.c

@@ -1563,10 +1563,10 @@ int main(int argc, char **argv, char **envp)
           else if (indent > 0)
             {
               /* REVISIT: Generates false alarms when a statement continues on
-               * the next line.  The bstatm check limits to lines beginnnig with
+               * the next line.  The bstatm check limits to lines beginning with
                * C keywords.
                * REVISIT:  The bstatm check will not detect statements that
-               * do not begin with a C keyword (such as assignement statements).
+               * do not begin with a C keyword (such as assignment statements).
                * REVISIT: Generates false alarms on comments at the end of
                * the line if there is nothing preceding (such as the aligned
                * comments with a structure field definition).  So disabled for