fixed a few compiler warnings

sources/mmc.c

@@ -3,6 +3,7 @@
 #include <sd_card.h>
 #include <bas_printf.h>
 #include <sysinit.h>
+#include <wait.h>
 #include <MCF5475.h>
 
 /*
@@ -168,7 +169,6 @@ static void xmit_spi_multi(const uint8_t *buff, uint32_t btx)
 
 static uint32_t card_ready(void)
 {
-	static uint32_t counter = 0;
 	uint8_t d;
 
 	d = xchg_spi(0xff);

sources/wait.c

@@ -29,30 +29,3 @@
 #include <MCF5475.h>
 
 #include <wait.h>
-
-/*
- * wait for the specified number of us on slice timer 0. Replaces the original routines that had
- * the number of useconds to wait for hardcoded in their name.
- */
-inline void wait(uint32_t us)
-{
-	uint32_t target = MCF_SLT_SCNT(0) - (us * 132);
-
-	while (MCF_SLT_SCNT(0) > target);
-}
-
-/*
- * the same as above, with a checker function which gets called while
- * busy waiting and allows for an early return if it returns true
- */
-inline bool waitfor(uint32_t us, int (*condition)(void))
-{
-	uint32_t target = MCF_SLT_SCNT(0) - (us * 132);
-
-	do
-	{
-		if ((*condition)())
-			return TRUE;
-	} while (MCF_SLT_SCNT(0) > target);
-	return FALSE;
-}