Extend POST support for PPC440

Added memory, CPU, UART, I2C and SPR POST tests for PPC440.

Signed-off-by: Igor Lisitsin <igor@emcraft.com>
--
diff --git a/post/tests.c b/post/tests.c
index 3bccd1a..f3604b2 100644
--- a/post/tests.c
+++ b/post/tests.c
@@ -37,6 +37,7 @@
 extern int rtc_post_test (int flags);
 extern int memory_post_test (int flags);
 extern int cpu_post_test (int flags);
+extern int fpu_post_test (int flags);
 extern int uart_post_test (int flags);
 extern int ether_post_test (int flags);
 extern int spi_post_test (int flags);
@@ -126,6 +127,19 @@
 	CFG_POST_CPU
     },
 #endif
+#if CONFIG_POST & CFG_POST_FPU
+    {
+	"FPU test",
+	"fpu",
+	"This test verifies the arithmetic logic unit of"
+	" FPU.",
+	POST_RAM | POST_ALWAYS,
+	&fpu_post_test,
+	NULL,
+	NULL,
+	CFG_POST_FPU
+    },
+#endif
 #if CONFIG_POST & CFG_POST_UART
     {
 	"UART test",