External ARM9 payload chainloading for a9lh, cleaned up the sdmmc library (from the dark-samus a9lh fork)

loader/source/fatfs/sdmmc/delay.s

@@ -0,0 +1,15 @@
+.arm
+.global waitcycles
+.type   waitcycles STT_FUNC
+
+@waitcycles ( u32 us )
+waitcycles:
+	PUSH    {R0-R2,LR}
+	STR     R0, [SP,#4]
+	waitcycles_loop:
+		LDR     R3, [SP,#4]
+		SUBS    R2, R3, #1
+		STR     R2, [SP,#4]
+		CMP     R3, #0
+		BNE     waitcycles_loop
+	POP     {R0-R2,PC}