remoteproc: qcom: add more help text qcom options

With these more help text added, hopefully it's easier to understand the
distinctions of these qcom remoteproc drivers.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Link: https://lore.kernel.org/r/20201217030400.6235-1-shawn.guo@linaro.orgSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

drivers/remoteproc/Kconfig

@@ -162,7 +162,9 @@ config QCOM_Q6V5_ADSP
 	select QCOM_RPROC_COMMON
 	help
 	  Say y here to support the Peripheral Image Loader
-	  for the Qualcomm Technology Inc. ADSP remote processors.
+	  for the non-TrustZone part of Qualcomm Technology Inc. ADSP and CDSP
+	  remote processors. The TrustZone part is handled by QCOM_Q6V5_PAS
+	  driver.
 
 config QCOM_Q6V5_MSS
 	tristate "Qualcomm Hexagon V5 self-authenticating modem subsystem support"
@@ -179,7 +181,8 @@ config QCOM_Q6V5_MSS
 	select QCOM_SCM
 	help
 	  Say y here to support the Qualcomm self-authenticating modem
-	  subsystem based on Hexagon V5.
+	  subsystem based on Hexagon V5. The TrustZone based system is
+	  handled by QCOM_Q6V5_PAS driver.
 
 config QCOM_Q6V5_PAS
 	tristate "Qualcomm Hexagon v5 Peripheral Authentication Service support"
@@ -197,7 +200,9 @@ config QCOM_Q6V5_PAS
 	help
 	  Say y here to support the TrustZone based Peripheral Image Loader
 	  for the Qualcomm Hexagon v5 based remote processors. This is commonly
-	  used to control subsystems such as ADSP, Compute and Sensor.
+	  used to control subsystems such as ADSP (Audio DSP),
+	  CDSP (Compute DSP), MPSS (Modem Peripheral SubSystem), and
+	  SLPI (Sensor Low Power Island).
 
 config QCOM_Q6V5_WCSS
 	tristate "Qualcomm Hexagon based WCSS Peripheral Image Loader"
@@ -214,7 +219,8 @@ config QCOM_Q6V5_WCSS
 	select QCOM_SCM
 	help
 	  Say y here to support the Qualcomm Peripheral Image Loader for the
-	  Hexagon V5 based WCSS remote processors.
+	  Hexagon V5 based WCSS remote processors on e.g. IPQ8074.  This is
+	  a non-TrustZone wireless subsystem.
 
 config QCOM_SYSMON
 	tristate "Qualcomm sysmon driver"
@@ -243,8 +249,10 @@ config QCOM_WCNSS_PIL
 	select QCOM_RPROC_COMMON
 	select QCOM_SCM
 	help
-	  Say y here to support the Peripheral Image Loader for the Qualcomm
-	  Wireless Connectivity Subsystem.
+	  Say y here to support the Peripheral Image Loader for loading WCNSS
+	  firmware and boot the core on e.g. MSM8974, MSM8916. The firmware is
+	  verified and booted with the help of the Peripheral Authentication
+	  System (PAS) in TrustZone.
 
 config ST_REMOTEPROC
 	tristate "ST remoteproc support"