libhsakmt: use uint32_t for loop index variables

This patch changes the type of several loop index variables from int to
uint32_t in fmm.c. The affected functions are:
- __fmm_release
- _fmm_map_to_gpu
- _fmm_unmap_from_gpu

To fix compile warning:

warning: comparison of integer expressions of different signedness:
'int' and 'uint32_t' {aka 'unsigned int'} [-Wsign-compare]
 2009 |         for (i = 0; i < object->handle_num; i++) {

Signed-off-by: Honglei Huang <Honglei1.Huang@amd.com>


[ROCm/ROCR-Runtime commit: 45af009c5d]

projects/rocr-runtime/libhsakmt/src/fmm.c

@@ -1986,7 +1986,8 @@ void *hsakmt_fmm_allocate_host(uint32_t gpu_id, uint32_t node_id, void *address,
 static int __fmm_release(vm_object_t *object, manageable_aperture_t *aperture)
 {
 	struct kfd_ioctl_free_memory_of_gpu_args args = {0};
-	int ret = 0, i;
+	int ret = 0;
+	uint32_t i;
 
 	if (!object)
 		return -EINVAL;
@@ -3100,7 +3101,8 @@ static HSAKMT_STATUS _fmm_map_to_gpu(manageable_aperture_t *aperture,
 	struct kfd_ioctl_map_memory_to_gpu_args args = {0};
 	vm_object_t *object;
 	HSAKMT_STATUS ret = HSAKMT_STATUS_SUCCESS;
-	int ret_ioctl, i;
+	int ret_ioctl;
+	uint32_t i;
 
 	if (!obj)
 		pthread_mutex_lock(&aperture->fmm_mutex);
@@ -3357,7 +3359,8 @@ static int _fmm_unmap_from_gpu(manageable_aperture_t *aperture, void *address,
 		vm_object_t *obj)
 {
 	vm_object_t *object;
-	int ret = 0, tmp_ret, i;
+	int ret = 0, tmp_ret;
+	uint32_t i;
 	struct kfd_ioctl_unmap_memory_from_gpu_args args = {0};
 	HSAuint32 page_offset = (HSAint64)address & (PAGE_SIZE - 1);