drivers: staging: vme_user: Describe VME_BUS and VME_TSI148

Help description for both options only tells users to enable them
without description of what VME bridge and TSI148 device are.

Briefly describe them.

Signed-off-by: Bagas Sanjaya <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/vme_user/Kconfig

···
 	bool "VME bridge support"
 	depends on PCI
 	help
-	  If you say Y here you get support for the VME bridge Framework.
+	  Enable support for VME (VersaModular Eurocard bus) bridge modules.
+	  The bridge allows connecting VME devices to systems with existing
+	  interfaces (like USB or PCI) by means of translating VME protocol
+	  operations.
+
+	  Note that this only enables the bridge framework. You'll also
+	  likely want to enable driver for specific bridge device you have
+	  to actually use it. If unsure, say N.
 
 if VME_BUS
 
 comment "VME Bridge Drivers"
 
 config VME_TSI148
-	tristate "Tempe"
+	tristate "Tundra TSI148 VME bridge support"
 	depends on HAS_DMA
 	help
-	 If you say Y here you get support for the Tundra TSI148 VME bridge
-	 chip.
+	 If you say Y here you get support for the Tundra TSI148 VME-to-PCI/X
+	 bridge chip (and pin-compatible clones).
+
+	 TSI148 is a high-performant, 2eSST and VME64-compliant VME-to-PCI/X
+	 interconnect bridge with support for PCI and PCI-X bus interface.
+	 It is primarily used in industrial and embedded systems.
+
+	 To compile this driver as a module, say M - the module will be
+	 called vme_tsi148. If unsure, say N.
 
 config VME_FAKE
 	tristate "Fake"