bcm53xx: 6.6: fix ASM cache workaround linking

Kernel 6.6 checks for orphan sections and prints a warning about them,
which in turn will make CI fails as we have Werror enabled there.

Issue is that cache-v7-min.S produces .init.text section which is an
orphan section since it is not being handled by the vmlinux.lds.S linker
script.

So, lets put the generated .init.text section under .text.

Fixes: f0d8ce4f48 ("bcm53xx: add testing support for kernel 6.6")
Signed-off-by: Robert Marko <robimarko@gmail.com>

target/linux/bcm53xx/patches-6.6/300-ARM-BCM5301X-Disable-MMU-and-Dcache-during-decompres.patch

@@ -99,3 +99,13 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
  	subs	r9, r9, #1			@ decrement the index
  	bge	loop2
  	subs	r4, r4, #1			@ decrement the way
+--- a/arch/arm/boot/compressed/vmlinux.lds.S
++++ b/arch/arm/boot/compressed/vmlinux.lds.S
+@@ -41,6 +41,7 @@ SECTIONS
+     *(.start)
+     *(.text)
+     *(.text.*)
++    *(.init.text)
+     ARM_STUBS_TEXT
+   }
+   .table : ALIGN(4) {