experiments: enabled L2 cache

...and removed some trailing spaces

experiments/src/main.rs

@@ -27,6 +27,7 @@ use libboard_zynq::{
 };
 use libcortex_a9::{
     mutex::Mutex,
+    l2c::enable_l2_cache,
     sync_channel::{Sender, Receiver},
     sync_channel,
     regs::{MPIDR, SP},
@@ -86,6 +87,7 @@ pub fn restart_core1() {
 #[no_mangle]
 pub fn main_core0() {
     // zynq::clocks::CpuClocks::enable_io(1_250_000_000);
+    enable_l2_cache();
     println!("\nzc706 main");
     let mut interrupt_controller = gic::InterruptController::gic(mpcore::RegisterBlock::mpcore());
     interrupt_controller.enable_interrupts();