Fix DTB compilation regression in default build

The 'all' target unconditionally included $(BUILD_DTB) and $(BUILD_DTB2C),
causing device tree compilation to run even for user-space builds where
ENABLE_SYSTEM=0. This triggered dtc syntax errors because the required
macros (INITRD_START, INITRD_END, MEM_START, MEM_END) are only defined
for system mode.

Since DTB_DEPS is already conditionally set to include these targets when
needed (ENABLE_SYSTEM=1 and ENABLE_ELF_LOADER=0), the redundant explicit
dependencies are removed.

Fixes regression introduced in commit 2b06e85 where ELF_LOADER logic
was reordered.

Author: jserv

.github/workflows/main.yml

@@ -499,14 +499,14 @@ jobs:
                fi
              done
 
-    - name: JIT debug test
-      env:
-        CC: ${{ steps.install_cc.outputs.cc }}
-      run: |
-            # Run JIT tests with debug mode to catch register allocation and cache coherency issues
-            make distclean && make ENABLE_JIT=1 ENABLE_JIT_DEBUG=1 check $PARALLEL
-            make distclean && make ENABLE_EXT_C=0 ENABLE_JIT=1 ENABLE_JIT_DEBUG=1 check $PARALLEL
-      if: ${{ always() }}
+     - name: JIT debug test
+       env:
+         CC: ${{ steps.install_cc.outputs.cc }}
+       run: |
+             # Run JIT tests with debug mode to catch register allocation and cache coherency issues
+             make distclean && make ENABLE_JIT=1 ENABLE_JIT_DEBUG=1 check $PARALLEL
+             make distclean && make ENABLE_EXT_C=0 ENABLE_JIT=1 ENABLE_JIT_DEBUG=1 check $PARALLEL
+       if: ${{ always() }}
 
      - name: undefined behavior test
        if: (success() || failure()) && steps.install_cc.outputs.cc == 'clang'  # gcc on macOS/arm64 does not support sanitizers

Makefile

@@ -392,7 +392,7 @@ DTB_DEPS := $(BUILD_DTB) $(BUILD_DTB2C)
 endif
 endif
 
-all: config $(DTB_DEPS) $(BUILD_DTB) $(BUILD_DTB2C) $(BIN)
+all: config $(DTB_DEPS) $(BIN)
 
 OBJS := \
     map.o \