vc04_services/vc-sm-cma: Switch one-bit bitfields to bool

Clang 16 warns:

../drivers/staging/vc04_services/vc-sm-cma/vc_sm.c:816:19: warning: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Wsingle-bit-bitfield-constant-conversion]
        buffer->imported = 1;
                         ^ ~
../drivers/staging/vc04_services/vc-sm-cma/vc_sm.c:822:17: warning: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Wsingle-bit-bitfield-constant-conversion]
        buffer->in_use = 1;
                       ^ ~
2 warnings generated.

Signed-off-by: Alexander Winkowski <dereference23@outlook.com>

Author: dereference23

drivers/staging/vc04_services/vc-sm-cma/vc_sm.c

@@ -533,7 +533,7 @@ static void vc_sm_dma_buf_release(struct dma_buf *dmabuf)
 
 	pr_debug("%s dmabuf %p, buffer %p\n", __func__, dmabuf, buffer);
 
-	buffer->in_use = 0;
+	buffer->in_use = false;
 
 	/* Unmap on the VPU */
 	vc_sm_vpu_free(buffer);
@@ -813,13 +813,13 @@ vc_sm_cma_import_dmabuf_internal(struct vc_sm_privdata_t *private,
 	buffer->size = import.size;
 	buffer->vpu_state = VPU_MAPPED;
 
-	buffer->imported = 1;
+	buffer->imported = true;
 	buffer->import.dma_buf = dma_buf;
 
 	buffer->import.attach = attach;
 	buffer->import.sgt = sgt;
 	buffer->dma_addr = dma_addr;
-	buffer->in_use = 1;
+	buffer->in_use = true;
 	buffer->kernel_id = import.kernel_id;
 
 	/*

drivers/staging/vc04_services/vc-sm-cma/vc_sm.h

@@ -57,8 +57,8 @@ struct vc_sm_buffer {
 
 	char name[VC_SM_MAX_NAME_LEN];
 
-	int in_use:1;	/* Kernel is still using this resource */
-	int imported:1;	/* Imported dmabuf */
+	bool in_use:1;   /* Kernel is still using this resource */
+	bool imported:1; /* Imported dmabuf */
 
 	enum vc_sm_vpu_mapping_state vpu_state;
 	u32 vc_handle;	/* VideoCore handle for this buffer */