Re-added reboot patch on A9LH, optimizations

O3DS and N3DS now share the same emuNAND patch, shorter patching patterns, patched_firmware does not keep garbage from larger loaded FIRMs, flags can be empty files

reboot/rebootCode90.s

@@ -0,0 +1,59 @@
+.nds
+
+firm_size equ 0x000E9000
+firm_addr equ 0x24000000
+fopen equ 0x0805AF20
+fread equ 0x0804D828
+pxi_wait_recv equ 0x08054FB0
+
+.macro svc, num
+	.if isArm()
+		.word 0xEF000000 | num
+	.else
+		.if num > 0xFF
+			.error "bitch you crazu"
+		.endif
+		.halfword 0xDF00 | num
+	.endif
+.endmacro
+
+.create "reboot1.bin", 0x080858E0
+.org 0x080858E0
+.arm
+patch005:
+	ldr r0, =0x2000E000
+	mov r1, #0x200
+	mov r2, #0
+	add r1, r1, r0
+@@memset_loop:
+	str r2, [r0]
+	add r0, r0, #4
+	cmp r0, r1
+	blt @@memset_loop
+	ldr r0, =0x2000E000
+	ldr r1, =firm_fname
+	mov r2, #1
+	blx fopen
+	ldr r0, =0x2000E000
+	ldr r1, =0x2000E100
+	mov r2, #firm_addr
+	mov r3, #firm_size
+	blx fread
+
+	ldr r4, =0x44846
+	blx pxi_wait_recv
+	cmp r0, r4
+	bne patch005
+	mov r2, #0
+	mov r3, r2
+	mov r1, r2
+	mov r0, r2
+	svc 0x7C
+	ldr r0, =0x80FF4FC
+	svc 0x7B
+
+@@inf_loop:
+	b @@inf_loop
+.pool
+firm_fname:
+.close