PATI: fix broken SPI access

fix broken SPI access by adding/activating BOARD_EARLY_INIT_F
functionality and calling spi_init_f() from there.

Signed-off-by: David Müller <d.mueller@elsoft.ch>
diff --git a/include/configs/PATI.h b/include/configs/PATI.h
index 65ab65d..3ca204e 100644
--- a/include/configs/PATI.h
+++ b/include/configs/PATI.h
@@ -98,6 +98,7 @@
 
 #define CONFIG_SYS_BAUDRATE_TABLE	{ 9600, 19200, 38400, 57600, 115200, 1250000 }
 
+#define CONFIG_BOARD_EARLY_INIT_F
 
 /***********************************************************************
  * Last Stage Init