Rockchip: Add Hantro support in encoder plugin.

Rockchip driver has been renamed to Hantro from kernel v4.19.
This patch adds Hantro driver check in order for the plugin to also
support Hantro.

BUG=chromium:965378
TEST=Checked encoder plugin is used on Hantro and v4.19 using VP8
encoder unittest

Change-Id: I5a45717c073f09959cd27ff2ca5debdcff83d8d4
Signed-off-by: Francois Buergisser <fbuergisser@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1732619


Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Legacy-Commit-Queue: Commit Bot <commit-bot@chromium.org>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>

libv4l-rockchip/libv4l-encplugin-rockchip.c

@@ -45,6 +45,7 @@
 #endif
 
 #define RK3288_VPU_NAME "rk3288-vpu-enc"
+#define HANTRO_VPU_NAME "hantro-vpu"
 #define DEFAULT_FRAME_RATE 30
 #define DEFAULT_BITRATE 1000000
 #define PENDING_BUFFER_QUEUE_SIZE VIDEO_MAX_FRAME
@@ -524,7 +525,9 @@ bool is_rockchip_encoder(int fd) {
 	int ret = SYS_IOCTL(fd, VIDIOC_QUERYCAP, &cap);
 	if (ret)
 		return false;
-	return strcmp(RK3288_VPU_NAME, (const char *)cap.driver) == 0;
+
+	return strcmp(RK3288_VPU_NAME, (const char *)cap.driver) == 0 ||
+	       strcmp(HANTRO_VPU_NAME, (const char *)cap.driver) == 0;
 }
 
 int set_encoder_config_locked(struct encoder_context *ctx, int fd,