drivers: entropy: introduce new Telink B91 Entropy driver

Entropy driver basic support for new Telink B91 platform.

Signed-off-by: Yuriy Vynnychek <yura.vynnychek@telink-semi.com>
diff --git a/CODEOWNERS b/CODEOWNERS
index 50cb2f7..dc8c93f 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -211,6 +211,7 @@
 /drivers/edac/                            @finikorg
 /drivers/eeprom/                          @henrikbrixandersen
 /drivers/eeprom/eeprom_stm32.c            @KwonTae-young
+/drivers/entropy/*b91*                    @yurvyn
 /drivers/entropy/*rv32m1*                 @MaureenHelm
 /drivers/entropy/*gecko*                  @chrta
 /drivers/entropy/*litex*                  @mateusz-holenko @kgugala @pgielda