qcacld-3.0: Fix implicit enum conversion in csr_fetch_valid_ch_lst

Fix implicit conversion from enumeration type 'tSirRFBand'
to different enumeration type 'eCsrBand'

Currently 3 different types of enums exist to enumerate the
band type.Remove eCsrBand and tSirRfBand and
use tSirRFBand everywhere.

Change-Id: I1862c6d3a5daca7523870b7f0931ee4f20c7ce4f
CRs-Fixed: 2145080
diff --git a/core/hdd/src/wlan_hdd_cfg.c b/core/hdd/src/wlan_hdd_cfg.c
index 3c3cf49..3bbb1de 100644
--- a/core/hdd/src/wlan_hdd_cfg.c
+++ b/core/hdd/src/wlan_hdd_cfg.c
@@ -8617,7 +8617,7 @@
 	smeConfig->csrConfig.ProprietaryRatesEnabled = 0;
 	smeConfig->csrConfig.HeartbeatThresh50 = 40;
 	smeConfig->csrConfig.bandCapability = pConfig->nBandCapability;
-	if (pConfig->nBandCapability == eCSR_BAND_24) {
+	if (pConfig->nBandCapability == BAND_2G) {
 		smeConfig->csrConfig.Is11hSupportEnabled = 0;
 	} else {
 		smeConfig->csrConfig.Is11hSupportEnabled =