Split internal system package

This changes splits the functionality in the internal system package
into two packages: one for dealing with devices and one for dealing
with kernel modules. This removes ambiguity around the meaning of
driver / device roots in each case.

In each case, a root can be specified where device nodes are created
or kernel modules loaded.

Signed-off-by: Evan Lezar <elezar@nvidia.com>

internal/system/nvdevices/mknod_mock.go

@@ -0,0 +1,89 @@
+// Code generated by moq; DO NOT EDIT.
+// github.com/matryer/moq
+
+package nvdevices
+
+import (
+	"sync"
+)
+
+// Ensure, that mknoderMock does implement mknoder.
+// If this is not the case, regenerate this file with moq.
+var _ mknoder = &mknoderMock{}
+
+// mknoderMock is a mock implementation of mknoder.
+//
+//	func TestSomethingThatUsesmknoder(t *testing.T) {
+//
+//		// make and configure a mocked mknoder
+//		mockedmknoder := &mknoderMock{
+//			MknodeFunc: func(s string, n1 int, n2 int) error {
+//				panic("mock out the Mknode method")
+//			},
+//		}
+//
+//		// use mockedmknoder in code that requires mknoder
+//		// and then make assertions.
+//
+//	}
+type mknoderMock struct {
+	// MknodeFunc mocks the Mknode method.
+	MknodeFunc func(s string, n1 int, n2 int) error
+
+	// calls tracks calls to the methods.
+	calls struct {
+		// Mknode holds details about calls to the Mknode method.
+		Mknode []struct {
+			// S is the s argument value.
+			S string
+			// N1 is the n1 argument value.
+			N1 int
+			// N2 is the n2 argument value.
+			N2 int
+		}
+	}
+	lockMknode sync.RWMutex
+}
+
+// Mknode calls MknodeFunc.
+func (mock *mknoderMock) Mknode(s string, n1 int, n2 int) error {
+	callInfo := struct {
+		S  string
+		N1 int
+		N2 int
+	}{
+		S:  s,
+		N1: n1,
+		N2: n2,
+	}
+	mock.lockMknode.Lock()
+	mock.calls.Mknode = append(mock.calls.Mknode, callInfo)
+	mock.lockMknode.Unlock()
+	if mock.MknodeFunc == nil {
+		var (
+			errOut error
+		)
+		return errOut
+	}
+	return mock.MknodeFunc(s, n1, n2)
+}
+
+// MknodeCalls gets all the calls that were made to Mknode.
+// Check the length with:
+//
+//	len(mockedmknoder.MknodeCalls())
+func (mock *mknoderMock) MknodeCalls() []struct {
+	S  string
+	N1 int
+	N2 int
+} {
+	var calls []struct {
+		S  string
+		N1 int
+		N2 int
+	}
+	mock.lockMknode.RLock()
+	calls = mock.calls.Mknode
+	mock.lockMknode.RUnlock()
+	return calls
+}