qcacld-3.0: remove struct sps_iovc reference

Since struct sps_iovc is obsolete in the latest kernel,
use a local macro instead of sizeof() . It should be
updated with the correct IPA size macro once it is
avaiable in the latest kernel.

CRs-Fixed: 2160658
Change-Id: Ifc2926d5182c96e07de6b4ddd50156764b7ad51e
diff --git a/core/hdd/src/wlan_hdd_ipa.c b/core/hdd/src/wlan_hdd_ipa.c
index 912e826..4f63080 100644
--- a/core/hdd/src/wlan_hdd_ipa.c
+++ b/core/hdd/src/wlan_hdd_ipa.c
@@ -4992,7 +4992,7 @@
 	 * make sure hardware always has one descriptor.
 	 */
 	desc_fifo_sz = hdd_ipa->hdd_ctx->config->IpaDescSize
-		       + sizeof(struct sps_iovec);
+		       + SPS_DESC_SIZE;
 
 	ret = hdd_ipa_setup_tx_sys_pipe(hdd_ipa, desc_fifo_sz);
 	if (ret) {