soc: sensry: sy1xx: add support for LLEXT build

The linker script for this SoC was not including the LLEXT section
definitions when CONFIG_LLEXT was enabled. This patch adds the
necessary include directive to the linker script and fixes the build
issue identified by CI.

Signed-off-by: Luca Burelli <l.burelli@arduino.cc>

soc/sensry/ganymed/sy1xx/common/linker.ld

@@ -78,6 +78,9 @@ SECTIONS
 
         #include <zephyr/linker/rel-sections.ld>
 
+        #ifdef CONFIG_LLEXT
+        #include <zephyr/linker/llext-sections.ld>
+        #endif
 
         SECTION_PROLOGUE(.plt,,)
         {