Update unittests for solo5

Author: fwsGonzo

test/CMakeLists.txt

@@ -129,7 +129,6 @@ set(OS_SOURCES
   ${SRC}/hw/pci_msi.cpp
   ${SRC}/hw/ps2.cpp
   ${SRC}/hw/serial.cpp
-  ${SRC}/kernel/block.cpp
   ${SRC}/kernel/cpuid.cpp
   ${SRC}/kernel/elf.cpp
   ${SRC}/kernel/irq_manager.cpp

test/lest_util/nic_mock.hpp

@@ -128,6 +128,7 @@ class Nic_mock : public hw::Nic {
   }
 
   void flush() override {}
+  void poll() override {}
 
 private:
 

test/lest_util/os_mock.cpp

@@ -73,10 +73,17 @@ Timers::id_t Timers::periodic(duration_t, duration_t, handler_t) {
 }
 
 #include <kernel/os.hpp>
+void OS::start(unsigned, unsigned) {
+}
+void OS::event_loop() {
+}
+void OS::block() {
+}
+int64_t OS::micros_since_boot() noexcept {
+  return 0;
+}
 void OS::resume_softreset(intptr_t) {
-  return;
 }
-
 bool OS::is_softreset_magic(uint32_t) {
   return true;
 }