soc/qc/x1p42100: Perform soc_mmu_init inside early bootblock init

This commit introduces `bootblock_soc_early_init` API for early SoC
initialization sequence in the bootblock.

- `bootblock_soc_early_init()`: This function now handles very early
  initialization steps (before console init), specifically
  `soc_mmu_init()` when the bootblock is not compressed.

- `bootblock_soc_init()`: This function retains the subsequent
  initialization tasks including `clock_init()`, `quadspi_init()`,
  and `qupv3_fw_init()`.

This change ensures MMU setup to occur before other peripheral and
clock initializations.

TEST=Able to get bootblock console log in proper.

Change-Id: I8bbcdb9c39e13fac81ef6a34647c4f343a619561
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87857
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Pranava Y N <pranavayn@google.com>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>

src/soc/qualcomm/x1p42100/bootblock.c

@@ -7,11 +7,15 @@
 
 #define SPI_BUS_CLOCK_FREQ (50 * MHz)
 
+void bootblock_soc_early_init(void)
+{
+	if (!CONFIG(COMPRESS_BOOTBLOCK))
+		soc_mmu_init();
+}
+
 void bootblock_soc_init(void)
 {
 	clock_init();
-	if (!CONFIG(COMPRESS_BOOTBLOCK))
-		soc_mmu_init();
 
 	quadspi_init(SPI_BUS_CLOCK_FREQ);
 	qupv3_fw_init();