arm: printf() is not available in some SPL configurations

This patch avoids build breakage for SPLs that do not support printf.

Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Acked-by: Tom Rini <trini@ti.com>
Acked-by: Andreas Bießmann <andreas.devel@googlemail.com>

arch/arm/lib/eabi_compat.c

@@ -13,7 +13,9 @@
 
 int raise (int signum)
 {
+#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 	printf("raise: Signal # %d caught\n", signum);
+#endif
 	return 0;
 }