qcacld-3.0: Disable delay reg write feature for MDM platform

Delay reg write feature is based on workqueue, for MDM platform
that only has one CPU, WQ is preempeted by NETRX/NETTX Soft IRQ
and lead to ring update delay, at last backpressue happens.
Change is aimed to disable delay reg feature for one CPU platform.

Change-Id: I133ab999739449009f18ecb030e9ca889ea63761
CRs-Fixed: 3002768

configs/default_defconfig

@@ -779,6 +779,7 @@ CONFIG_FEATURE_WLAN_AUTO_SHUTDOWN := y
 CONFIG_FEATURE_WLAN_AP_AP_ACS_OPTIMIZE := y
 CONFIG_FEATURE_WLAN_STA_4ADDR_SCHEME := y
 CONFIG_MDM_PLATFORM := y
+CONFIG_FEATURE_HAL_DELAYED_REG_WRITE := n
 ifneq ($(CONFIG_ARCH_SDXPRAIRIE), y)
 ifneq ($(CONFIG_ARCH_SA515), y)
 ifneq ($(CONFIG_ARCH_SDXLEMUR), y)