efi_loader: EFI_RNG_PROTOCOL

Do not use quotation marks for Kconfig help text.
Replace rng abbreviation by full words.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig
index a7afa3f..76f43ec 100644
--- a/lib/efi_loader/Kconfig
+++ b/lib/efi_loader/Kconfig
@@ -127,7 +127,7 @@
 	bool "EFI_RNG_PROTOCOL support"
 	depends on DM_RNG
 	help
-	  "Support for EFI_RNG_PROTOCOL implementation. Uses the rng
-	   device on the platform"
+	  Provide a EFI_RNG_PROTOCOL implementation using the hardware random
+	  number generator of the platform.
 
 endif