kbuild: Optimize ccache configuration

- Increased ccache cache size limit to 10GB for larger build support.
- Enabled compression for ccache to reduce disk space usage while maintaining cache efficiency.

Signed-off-by: UsiFX <xprjkts@gmail.com>

Author: UsiFX

kbuilder.sh

@@ -167,6 +167,10 @@ for arg in "$@"; do
                     # Let clang preprocess the code
                     export CCACHE_CPP2=yes
 
+                    # Set ccache options
+                    ccache --max-size=10G
+                    ccache --set-config compression=true
+
                     # Wrap toolchain with ccache in array listing
                     for i in "${!FLAGS[@]}"; do
                         case "${FLAGS[$i]}" in